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USPTO Patent Rankings Data through Dec 31, 2025
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Derek Parker — 6 Patents

PWPrimary Weapons: 3 patents #2 of 3Top 70%
OSO.F. Mossberg & Sons: 2 patents #8 of 38Top 25%
Wallingford, CT: #97 of 422 inventorsTop 25%
Connecticut: #7,364 of 34,797 inventorsTop 25%
Overall (All Time): #779,687 of 4,157,543Top 20%
6 Patents All Time
Derek Parker has been granted 6 US patents while listed as an inventor at Primary Weapons. The first was granted in 1998 and the most recent in January 2025. Derek Parker ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list Derek Parker in Wallingford, CT, US.

Patents per Year

Patents granted per year, 1998 to 2025Bar chart with a peak of 2 patents in 2017.peak 21998: 1 patents19982017: 2 patents20172018: 1 patents20182023: 1 patents20232025: 1 patents2025

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
12203718 Firearm for use with ordnance of varying lengths Thaddeus Boruchowski, David A. Johnson, Wayne Hopkins 2025-01-21
11598596 Firearm for use with ordnance of varying lengths Thaddeus Boruchowski, David A. Johnson, Wayne Hopkins 2023-03-07
10041751 Rotary lockup action Dean Sylvester 2018-08-07
9733031 Rotary lockup action Dean Sylvester 2017-08-15
D788251 Pistol charging handle grip Dean Sylvester 2017-05-30
D400475 Sled — 1998-11-03

Frequent Collaborators

Dean Sylvester3 shared
Wayne Hopkins2 shared
Thaddeus Boruchowski2 shared
David A. Johnson2 shared

Nearby-Ranked Inventors

Aurélien Joulia6
Michael F. Vollero6
Stefano Fracassi6
Uwe Gruenbeck6
Alexander Matrosov6
Rouzbeh Behnia6
Carole Chapelat6
Mina Sedaghat6
Martinus Johannes Donatus Brakkee6