Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6001763 | Method for re-manufacturing a cobalt/manganese/bromine catalyst from residue containing used catalyst | — | 1999-12-14 |
| 5759229 | Method for recovering cobalt/manganese/bromine values from residue containing used catalyst | — | 1998-06-02 |
| 5013843 | High yield of pyridine and/or alkylpyridine(s) in condensation reaction of ternary aldehydes and/or ketones with ammonia | Henry Wetstein | 1991-05-07 |
| 4883881 | Preparation of UV grade synthetic pyridine | Henry Wetstein | 1989-11-28 |
| 4675410 | Process for the production of pyridine or alkyl substituted pyridines | Wolfgang Schimming, Henry Wetstein | 1987-06-23 |
| 4612387 | Production of carboxylic acids and esters | — | 1986-09-16 |
| 4333885 | Method for producing carboxylic acid anhydride | — | 1982-06-08 |