HW

Henry Wetstein

NE Nepera: 3 patents #2 of 16Top 15%
🗺 New York: #38,318 of 115,490 inventorsTop 35%
Overall (All Time): #1,664,534 of 4,157,543Top 45%
3
Patents All Time

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