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

Douglas John — 2 Patents

Pfizer: 1 patents #3,022 of 5,153Top 60%
New London, CT: #30 of 100 inventorsTop 30%
Connecticut: #15,713 of 34,797 inventorsTop 50%
Overall (All Time): #1,709,992 of 4,157,543Top 45%
2 Patents All Time
Douglas John has been granted 2 US patents while listed as an inventor at Pfizer. The first was granted in 1994 and the most recent in February 2000. Douglas John ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Douglas John in New London, CT, US.

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDateApprox Value ⓘ
D419810 Wall mounted plant holder 2000-02-01
5338846 Process for preparing aryl piperazinyl-heterocyclic compounds with a piperazine salt Frank R. Busch, Paul Bowles, Meldrum Allen, Sabeto DiRoma, Dennis Michael Godek 1994-08-16 $33,245,000