Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
GM

Gordon Marsh — 9 Patents

DIDevon Industries: 4 patents #6 of 22Top 30%
Calabasas, CA: #419 of 4,119 inventorsTop 15%
California: #67,547 of 386,348 inventorsTop 20%
Overall (All Time): #535,341 of 4,157,543Top 15%
9 Patents All Time
Gordon Marsh has been granted 9 US patents while listed as an inventor at Devon Industries. The first was granted in 1994 and the most recent in December 2025. Gordon Marsh ranks #535,341 of 4,157,543 US inventors in our database (top 12.9%). Patent records list Gordon Marsh in Calabasas, CA, US.

Patents per Year

Patents granted per year, 1994 to 2022Bar chart with a peak of 2 patents in 1996.peak 21994: 1 patents19941996: 2 patents19961997: 1 patents19972022: 1 patents2022

Issued Patents All Time

Showing 1–9 of 9 patents

Patent #TitleCo-InventorsDate
12486583 Hydrogen generation system and regulator therefor 2025-12-02
12486584 Hydrogen generation system and regulator therefor 2025-12-02
12454763 Modular hydrogen generation system 2025-10-28
12454762 Contained hydrogen generation system 2025-10-28
11500401 Passive dual modulating regulator for hydrogen generation 2022-11-15
5647502 Wall mounted medical waste disposal container with pivoted top closure lid 1997-07-15
D376647 Needle counter container Dan Sandel 1996-12-17
5494186 Wall mounted medical waste disposal container with pivoted top closure lid 1996-02-27
D351906 Medical waste disposal container lid 1994-10-25