Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Henry Wetstein — 3 Patents

NENepera: 3 patents #2 of 16Top 15%
Rochester, NY: #2,414 of 6,268 inventorsTop 40%
New York: #38,631 of 115,490 inventorsTop 35%
Overall (All Time): #1,328,092 of 4,157,543Top 35%
3 Patents All Time
Henry Wetstein has been granted 3 US patents while listed as an inventor at Nepera. The first was granted in 1987 and the most recent in May 1991. Henry Wetstein ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Henry Wetstein in Rochester, NY, US.

Patents per Year

Patents granted per year, 1987 to 1991Bar chart with a peak of 1 patents in 1987.peak 11987: 1 patents19871989: 1 patents19891991: 1 patents1991

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5013843 High yield of pyridine and/or alkylpyridine(s) in condensation reaction of ternary aldehydes and/or ketones with ammonia David Feitler 1991-05-07
4883881 Preparation of UV grade synthetic pyridine David Feitler 1989-11-28
4675410 Process for the production of pyridine or alkyl substituted pyridines David Feitler, Wolfgang Schimming 1987-06-23