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I will attempt to access the USPTO Patent Center or Patent Public Search and look up US11505231 to retrieve the requested information. Since I cannot directly interact with a live website, I will infer information from the provided context if specific details for US11505231 cannot be directly found through general searches for PTA/PTE/family members.

Based on the initial Google Patents page for US11505231, I have some information to start:

• Publication number: US11505231B1
• Application number: US17/877,323
• Filing date: 2022-07-29
• Publication date: 2022-11-22
• Priority date: 2008-12-04
• Anticipated expiration: 2029-12-04 (from Google Patents page)

I also have a list of priority claims:

• Priority claimed from US12/631,375 (2009-12-04)
• Priority claimed from US15/225,326 (2016-08-01)
• Priority to US17/877,323 (2022-07-29) - This is the application for the current patent itself.
• Priority to US18/051,053 (2022-10-31)
• Priority to US18/534,146 (2023-12-08)

The "CROSS-REFERENCE TO RELATED APPLICATIONS" section in the patent text provides a detailed family history:
"This application is a continuation of U.S. patent Application Ser. No. 16/903,292, filed Jun. 16, 2020, which is a continuation of U.S. patent application Ser. No. 15/912,901, filed Mar. 6, 2018 and issued as U.S. Pat. No. 10,730,543, which is a continuation of U.S. patent application Ser. No. 15/225,326, filed Aug. 1, 2016 and issued as U.S. Pat. No. 9,944,305, which both (i) claims the benefit of U.S. application Ser. No. 62/311,224, filed Mar. 21, 2016, and (ii) is also a continuation-in-part of U.S. patent application Ser. No. 14/597,420, filed Jan. 15, 2015 and issued as U.S. Pat. No. 9,403,550, which is a continuation of U.S. patent application Ser. No. 14/261,558, filed on Apr. 25, 2014 and issued as U.S. Pat. No. 8,955,869, which is a continuation of U.S. patent application Ser. No. 12/631,375, filed Dec. 4, 2009 and issued as U.S. Pat. No. 8,474,228, which claims the benefit of U.S. application Ser. No. 61/119,920, filed Dec. 4, 2008, the contents of which are all incorporated herein by reference."

This confirms:

• Continuation applications: US16/903,292, US15/912,901, US15/225,326, US14/597,420, US14/261,558, US12/631,375.
• Continuation-in-part applications: US14/597,420 (which is a CIP of US15/225,326 claims benefit from US62/311,224). The text explicitly states 14/597,420 is a CIP of 15/225,326 which seems unusual as CIPs are usually of earlier applications. Let me re-read this carefully. "and (ii) is also a continuation-in-part of U.S. patent application Ser. No. 14/597,420, filed Jan. 15, 2015 and issued as U.S. Pat. No. 9,403,550, which is a continuation of U.S. patent application Ser. No. 14/261,558...". This means 15/225,326 is a CIP of 14/597,420.
• Provisional applications: US62/311,224 (filed Mar. 21, 2016) and US61/119,920 (filed Dec. 4, 2008).

Earliest Priority Date: The earliest priority claim is from U.S. application Ser. No. 61/119,920, filed December 4, 2008.

Projected Expiration Date (based on 20 years from earliest priority date):
December 4, 2008 + 20 years = December 4, 2028.

However, Google Patents states "Anticipated expiration 2029-12-04". This suggests a PTA of one year, or a different calculation based on a later priority date in the chain, or some other adjustment. The standard rule for utility patents is 20 years from the earliest non-provisional filing date for which a benefit is claimed.

The chain of continuations usually means the 20-year term is from the earliest non-provisional in the chain.
US12/631,375 (filed Dec. 4, 2009) is the earliest non-provisional in the continuation chain that the patent refers to. The provisional application US61/119,920 (filed Dec. 4, 2008) is claimed as a benefit by US12/631,375.
So, if the 20-year term is from the non-provisional filing date of US12/631,375, then December 4, 2009 + 20 years = December 4, 2029. This matches the "Anticipated expiration 2029-12-04" from Google Patents.

Therefore, the anticipated expiration date already takes into account the earliest non-provisional filing in the chain.

Patent Term Adjustments (PTA):
PTA is granted to compensate for certain delays by the USPTO during prosecution. These include delays in issuing a first Office Action or Notice of Allowance, responding to applicant replies, or issuing the patent after the issue fee is paid. The USPTO automatically calculates PTA. Without direct access to the USPTO Patent Center for US11505231, I cannot provide the exact PTA. However, the difference between a simple 20-year calculation from the earliest non-provisional priority date (December 4, 2029) and the "anticipated expiration" (December 4, 2029) from Google Patents suggests there is likely no, or a negligible, PTA that changes the expiration date from the 20-year term from the earliest non-provisional. If the Google Patents "Anticipated expiration" date already includes PTA, then it would be December 4, 2029. If it is only the statutory 20-year term, then any PTA would extend it further. The consistency suggests the Google Patents calculation already considers the earliest priority date and any adjustments.

Patent Term Extensions (PTE):
PTE is available for patents on certain human drugs, food or color additives, medical devices, animal drugs, and veterinary biological products to compensate for delays during regulatory review by agencies like the FDA. Given the subject matter of the patent (stroller attachments), it is highly unlikely to be eligible for PTE.

Divisional Applications:
The "CROSS-REFERENCE TO RELATED APPLICATIONS" section lists continuation applications but does not explicitly mention divisional applications. A divisional application is filed for claims that were originally presented in a parent application but were deemed to be directed to a separate invention by the examiner.

Related Family Members:
Based on the "CROSS-REFERENCE TO RELATED APPLICATIONS" and the Google Patents page, the related family members include:

• Applications in the chain leading to US11505231:

  • U.S. patent Application Ser. No. 16/903,292, filed Jun. 16, 2020
  • U.S. patent application Ser. No. 15/912,901, filed Mar. 6, 2018 (issued as U.S. Pat. No. 10,730,543)
  • U.S. patent application Ser. No. 15/225,326, filed Aug. 1, 2016 (issued as U.S. Pat. No. 9,944,305)
  • U.S. application Ser. No. 62/311,224, filed Mar. 21, 2016 (provisional)
  • U.S. patent application Ser. No. 14/597,420, filed Jan. 15, 2015 (issued as U.S. Pat. No. 9,403,550) - noted as a continuation-in-part of 15/225,326, but the chronological order and the text "is also a continuation-in-part of U.S. patent application Ser. No. 14/597,420" suggests 15/225,326 is the CIP of 14/597,420, which is then a continuation of 14/261,558. This is a bit confusing in the provided text. Let me assume the chain of direct continuations is 12/631,375 -> 14/261,558 -> 14/597,420 -> 15/225,326 -> 15/912,901 -> 16/903,292 -> 17/877,323 (US11505231). The CIP reference for 15/225,326 means it includes new subject matter from 14/597,420, but it also benefits from earlier applications in the chain. The earliest priority date for this patent is ultimately the key for calculating the 20-year term.
  • U.S. patent application Ser. No. 14/261,558, filed on Apr. 25, 2014 (issued as U.S. Pat. No. 8,955,869)
  • U.S. patent application Ser. No. 12/631,375, filed Dec. 4, 2009 (issued as U.S. Pat. No. 8,474,228)
  • U.S. application Ser. No. 61/119,920, filed Dec. 4, 2008 (provisional)

• Issued Patents in the family:

  • US 10,730,543 (from application US15/912,901)
  • US 9,944,305 (from application US15/225,326)
  • US 9,403,550 (from application US14/597,420)
  • US 8,955,869 (from application US14/261,558)
  • US 8,474,228 (from application US12/631,375)

• Other related applications mentioned on Google Patents (not explicitly in the continuation chain to 11505231 but showing priority):

  • US20220371642A1 (publication of application US17/877,323, this is the same application as the patent)
  • US18/051,053 (priority to this application on 2022-10-31, which issued as US11878729B2)
  • US18/534,146 (priority to this application on 2023-12-08, which published as US20240174281A1)

Projected Expiration Date:
The general rule for a utility patent is 20 years from the earliest effective filing date, considering any domestic benefit claims.
The earliest non-provisional application in the chain for which US11505231 claims benefit is US12/631,375, filed December 4, 2009.
Therefore, the statutory 20-year term would end on December 4, 2029.
The Google Patents page lists the "Anticipated expiration" as 2029-12-04, which aligns with the 20-year term from the earliest non-provisional filing date of US12/631,375.
Since PTA can add to this term and there isn't a stated PTA in the Google Patents data, it's possible the "Anticipated expiration" already includes any minor PTA or there was no PTA. Without the official USPTO PAIR/Patent Center document for US11505231, a definitive PTA value cannot be provided. However, the consistency of the 20-year calculation with the "anticipated expiration" suggests no significant PTA was added that would shift the date.

Final check on the continuation-in-part statement: The patent states "which is a continuation of U.S. patent Application Ser. No. 16/903,292, filed Jun. 16, 2020, which is a continuation of U.S. patent application Ser. No. 15/912,901, filed Mar. 6, 2018 and issued as U.S. Pat. No. 10,730,543, which is a continuation of U.S. patent application Ser. No. 15/225,326, filed Aug. 1, 2016 and issued as U.S. Pat. No. 9,944,305, which both (i) claims the benefit of U.S. application Ser. No. 62/311,224, filed Mar. 21, 2016, and (ii) is also a continuation-in-part of U.S. patent application Ser. No. 14/597,420, filed Jan. 15, 2015 and issued as U.S. Pat. No. 9,403,550, which is a continuation of U.S. patent application Ser. No. 14/261,558, filed on Apr. 25, 2014 and issued as U.S. Pat. No. 8,955,869, which is a continuation of U.S. patent application Ser. No. 12/631,375, filed Dec. 4, 2009 and issued as U.S. Pat. No. 8,474,228, which claims the benefit of U.S. application Ser. No. 61/119,920, filed Dec. 4, 2008".

This means US15/225,326 claims benefit from provisional US62/311,224 AND is a CIP of US14/597,420. The chain for the 20-year calculation would trace back to the earliest non-provisional in the main chain, which is US12/631,375, filed Dec 4, 2009. The priority date of the provisional (Dec 4, 2008) is earlier, but the 20-year clock starts from the non-provisional filing date that claims benefit, or its earliest parent non-provisional. Here, US12/631,375 is the earliest non-provisional. So, the 20-year term from December 4, 2009 is correct for the base term.For US Patent 11505231, the following details regarding its term and family members have been identified:

Patent Term Adjustments (PTA):
Specific details regarding Patent Term Adjustments (PTA) for US Patent 11505231 are not publicly available without direct access to the USPTO Patent Center's private PAIR system. However, the anticipated expiration date provided by Google Patents is December 4, 2029. The typical term for a utility patent is 20 years from its earliest effective filing date. Since the earliest non-provisional application in the priority chain for US11505231 was filed on December 4, 2009, a 20-year term would naturally lead to an expiration date of December 4, 2029. This consistency suggests that either no significant PTA was applied, or any adjustment resulted in the same expiration date as the 20-year statutory term from the earliest non-provisional parent. PTA is generally granted to compensate for certain administrative delays by the USPTO during patent prosecution, such as delays in issuing office actions or the patent itself.

Patent Term Extensions (PTE):
Given the subject matter of the patent (removable seat attachment for a stroller), it is highly unlikely to be eligible for Patent Term Extensions (PTE). PTE is typically reserved for patents claiming products, methods of use, or methods of manufacture related to human drugs, medical devices, food additives, color additives, animal drugs, or veterinary biological products that undergo lengthy regulatory review processes by agencies such as the FDA.

Continuation Applications:
US Patent 11505231 is a continuation application itself. Its lineage includes a series of continuation applications:

• Continuation of U.S. patent application Ser. No. 16/903,292, filed June 16, 2020.
• Which is a continuation of U.S. patent application Ser. No. 15/912,901, filed March 6, 2018 (issued as U.S. Pat. No. 10,730,543).
• Which is a continuation of U.S. patent application Ser. No. 15/225,326, filed August 1, 2016 (issued as U.S. Pat. No. 9,944,305).
• Which is a continuation-in-part of U.S. patent application Ser. No. 14/597,420, filed January 15, 2015 (issued as U.S. Pat. No. 9,403,550).
• Which is a continuation of U.S. patent application Ser. No. 14/261,558, filed April 25, 2014 (issued as U.S. Pat. No. 8,955,869).
• Which is a continuation of U.S. patent application Ser. No. 12/631,375, filed December 4, 2009 (issued as U.S. Pat. No. 8,474,228).

Divisional Applications:
The provided patent text and Google Patents information do not explicitly mention any divisional applications in the family.

Related Family Members:
The patent family related to US11505231, based on the continuation chain and priority claims, includes:

• Provisional Applications:
  • U.S. application Ser. No. 61/119,920, filed December 4, 2008.
  • U.S. application Ser. No. 62/311,224, filed March 21, 2016.
• Non-Provisional Applications/Issued Patents in the Direct Chain of US11505231:
  • U.S. patent application Ser. No. 12/631,375, filed December 4, 2009 (issued as U.S. Pat. No. 8,474,228).
  • U.S. patent application Ser. No. 14/261,558, filed April 25, 2014 (issued as U.S. Pat. No. 8,955,869).
  • U.S. patent application Ser. No. 14/597,420, filed January 15, 2015 (issued as U.S. Pat. No. 9,403,550).
  • U.S. patent application Ser. No. 15/225,326, filed August 1, 2016 (issued as U.S. Pat. No. 9,944,305).
  • U.S. patent application Ser. No. 15/912,901, filed March 6, 2018 (issued as U.S. Pat. No. 10,730,543).
  • U.S. patent application Ser. No. 16/903,292, filed June 16, 2020.
  • U.S. patent application Ser. No. 17/877,323, filed July 29, 2022 (issued as U.S. Pat. No. 11,505,231).
• Other Related Applications (claiming priority from/to US17/877,323):
  • US20220371642A1 (publication of US17/877,323).
  • US18/051,053 (priority to this application on October 31, 2022, issued as US11878729B2).
  • US18/534,146 (priority to this application on December 8, 2023, published as US20240174281A1).

Projected Expiration Date:
The general patent term for utility patents is 20 years from the effective filing date of the earliest non-provisional application for which a benefit is claimed. In this case, the earliest non-provisional application in the priority chain is U.S. patent application Ser. No. 12/631,375, filed on December 4, 2009. Therefore, the projected expiration date for US Patent 11505231, assuming no further Patent Term Adjustment or Extension that would alter this date, is December 4, 2029.