Welch; Melvin B.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Welch; Melvin B..The latest application filed is for "catalyst and process".
- Welch; Melvin B. - Bartlesville OK
| Patent | Date |
|---|---|
| Catalyst and process Grant 4,410,451 - Dietz , et al. October 18, 1 | 1983-10-18 |
| Polymerization catalyst and process Grant 4,331,558 - Welch , et al. May 25, 1 | 1982-05-25 |
| Catalyst, method of producing the catalyst, and polymerization process employing the catalyst Grant 4,326,988 - Welch , et al. April 27, 1 | 1982-04-27 |
| SC.sub.2 activation of supported chromium oxide catalysts Grant 4,307,214 - McDaniel , et al. December 22, 1 | 1981-12-22 |
| SO.sub.2 Activation of supported chromium oxide catalysts Grant 4,295,997 - McDaniel , et al. October 20, 1 | 1981-10-20 |
| Olefin polymerization Grant 4,284,748 - Welch August 18, 1 | 1981-08-18 |
| Sulfiding and reoxidation of chromium catalyst Grant 4,277,587 - McDaniel , et al. July 7, 1 | 1981-07-07 |
| Treatment of silica Grant 4,248,735 - McDaniel , et al. February 3, 1 | 1981-02-03 |
| Activation of supported chromium oxide catalysts Grant 4,247,421 - McDaniel , et al. January 27, 1 | 1981-01-27 |
| Polymerization catalyst and process Grant 4,243,552 - Welch , et al. January 6, 1 | 1981-01-06 |
| Catalyst and a polymerization process employing the catalyst Grant 4,234,710 - Moberly , et al. November 18, 1 | 1980-11-18 |
| Polymer slurry catalyst residue deactivation Grant 4,211,863 - McDaniel , et al. July 8, 1 | 1980-07-08 |
| Reduction and reoxidation of cogel or self-reduced catalyst Grant 4,182,815 - McDaniel , et al. January 8, 1 | 1980-01-08 |
| Sulfiding and reoxidation of chromium catalyst Grant 4,177,162 - McDaniel , et al. December 4, 1 | 1979-12-04 |
| Reduction and reoxidation of cogel or self-reduced catalyst Grant 4,151,122 - McDaniel , et al. April 24, 1 | 1979-04-24 |
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