Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5380932 | Process for producing methacrylic acid and methacrolein by oxidation of isobutane with molybdenum heteropoly acid catalyst | Ernst Bielmeier, Thomas Haeberle, Hermann Siegert | 1995-01-10 |
| 4966877 | Method for making heteropolyacid catalysts and catalysts made by the method | Klaus Langerbeins | 1990-10-30 |
| 4720575 | H.sub.8 PMo.sub.10 VO.sub.39 and its anhydride, PMo.sub.10 VO.sub.35 and preparation therewith of methacrylic acid and its lower alkyl ester | — | 1988-01-19 |
| 4370490 | Process for producing methacrylic acid by oxidative dehydration of isobutyric acid and catalyst therefor | Gunter Schroder | 1983-01-25 |