Patent 12152582

Assignment history

Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.

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Assignment history

Inventors, original assignee, and the chain of ownership recorded with the USPTO — including the correspondent attorney who recorded each assignment, since shell-LLC chains often share one repeat-player attorney even when the entity names look unrelated. Surfaces NPE / patent-troll patterns: shell-entity transfers, known asserters in the chain, repeat correspondent fingerprints, pre-litigation assignments, and bankruptcy fire-sales.

✓ Generated

Inventors

  • Kelcy Jake Foster (Employer: Kerr Machine Co. - inferred as the original assignee)
  • Mark S. Nowell (Employer: Kerr Machine Co. - inferred)
  • Brandon Scott Ayres (Employer: Kerr Machine Co. - inferred)
  • Christopher Todd Barnett (Employer: Kerr Machine Co. - inferred)

(Employer at time of filing is inferred as Kerr Machine Co. based on it being the original assignee and no other assignment information being present at the filing date of 2023-05-22.)

Original assignee

Kerr Machine Co. is the original assignee named on the issued patent US12152582B2.
Kerr Machine Co. is involved in the oil and gas industry, manufacturing fluid end assemblies which are used to deliver highly pressurized corrosive and/or abrasive fluids to wellbores, implying they ship products embodying the claims.
Based on available information, Kerr Machine Co. appears to be an operating company.
No information suggests Kerr Machine Co. has been acquired, dissolved, or is in bankruptcy.

Assignment timeline

The USPTO Patent Assignment Search for patent number 12152582 shows no recorded assignments. This indicates that the patent is likely still owned by the original assignee, Kerr Machine Co..

Timeline diagram

timeline
    title Ownership of US 12152582
    2017 : Priority date
    2023 : Application filed by Kerr Machine Co
    2024 : Granted to Kerr Machine Co

NPE / troll-pattern signals

  1. Shell-entity transfer — Not present. There are no recorded assignments, thus no transfers to any shell entities.
  2. Known asserter in the chain — Not present. The patent remains with the original assignee, Kerr Machine Co., which is not identified as a known NPE.
  3. Repeat correspondent across the chain — Not present. No assignments are recorded, so no correspondent patterns can be observed.
  4. Cascading transfers — Not present. No assignments are recorded.
  5. Pre-litigation transfer — Not present. No assignments are recorded, and no litigation information is available for this specific patent to assess this signal.
  6. Bankruptcy fire-sale — Not present. No recorded assignments indicate a bankruptcy sale.
  7. Privateering — Not present. No recorded assignments or external information suggest such a transfer.
  8. Defensive aggregator (anti-NPE) — Not present. The patent remains with an operating company and has not been transferred to a defensive aggregator.

Verdict

Insufficient data. There are no recorded assignments for US Patent 12152582 in the USPTO Patent Assignment Search. The patent appears to be held by the original assignee, Kerr Machine Co., an operating company. Without any assignment records, it's not possible to detect NPE or troll-pattern signals.

Verification link: https://assignmentcenter.uspto.gov/patent/index.html (search for 12152582)

Generated 6/29/2026, 6:45:33 PM