Extensions

Analysis of US Patent 9,737,072

Date of Analysis: 2026-05-14

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Patent Term and Expiration

Patent Term Adjustment (PTA) / Patent Term Extension (PTE):
A review of the prosecution history for US patent 9,737,072 indicates that no Patent Term Adjustment (PTA) or Patent Term Extension (PTE) was granted. The patent's term is therefore the standard 20 years calculated from its earliest effective filing date.

Projected Expiration Date:
The patent claims priority from the application filed on March 24, 2011 (U.S. Ser. No. 13/065,553). The 20-year term is calculated from this earliest priority date.

• Earliest Priority Date: March 24, 2011
• Projected Expiration Date: March 24, 2031

This date is consistent with the anticipated expiration noted in public patent databases.

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Relationship to Other Applications

Continuity Data:
US patent 9,737,072 is part of a larger family of patents and applications and has a clear line of continuity. The "Cross-Reference to Related Applications" section of the patent explicitly states its relationship to prior applications.

• Type: Divisional Application.
• Parent Application: The application for this patent (Ser. No. 15/063,293) is a divisional of U.S. patent application Ser. No. 14/019,296, filed on September 5, 2013, which has since issued as US Patent 9,370,180.
• Grandparent Application: The '296 application is itself a divisional of U.S. patent application Ser. No. 13/065,553, filed on March 24, 2011, which issued as US Patent 8,546,449.

This chain establishes March 24, 2011, as the key priority date for calculating the patent term for the entire family.

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Patent Family Members

The subject patent is part of an extensive family of US patents granted to Enviro Tech Chemical Services, Inc., all relating to the on-site generation and use of peracetic acid. This family shares a common priority claim back to the original 2011 application.

Key US Family Members:

Patent Number	Title	Filing Date	Issue Date	Relationship
US 8,546,449	Methods and compositions for the generation of peracetic acid on site at the point-of-use	2011-03-24	2013-10-01	Original (Grandparent) Patent
US 9,370,180	Methods and compositions for the generation of peracetic acid on site at the point-of-use	2013-09-05	2016-06-21	Divisional of '449 (Parent)
US 9,737,072	Methods and compositions for the generation of peracetic acid on site at the point-of-use	2016-03-07	2017-08-22	Divisional of '180 (Subject Patent)
US 10,004,230	Methods and compositions for the generation of peracetic acid on site at the point-of-use	2017-07-18	2018-06-26	Continuation of '072
US 10,912,321	Methods of using peracetic acid to treat poultry in a chill tank during processing	2012-09-27	2021-02-09	Related (Claims priority to '449)

Other related patents in this family include US 9,363,997 and US 9,730,443. The existence of this large, inter-related family indicates a focused and long-term strategy by the assignee to protect various aspects of this technology, from the chemical compositions to specific methods of use in different industries.