Frey; Walter
Patent Applications and Registrations
Patent applications and USPTO patent grants for Frey; Walter.The latest application filed is for "method of separating high-boiling or non-volatile materials".
- Frey; Walter - Ludwigshafen DE
- Frey; Walter - Manheim DT
- Frey; Walter - Mannheim DT
- Frey; Walter - Muttenz Basel-Land CH
| Patent | Date |
|---|---|
| Method of separating high-boiling or non-volatile materials Grant 4,110,370 - Engelbach , et al. August 29, 1 | 1978-08-29 |
| Catalytic oxidation of .alpha.-olefins Grant 4,052,450 - Krabetz , et al. October 4, 1 | 1977-10-04 |
| Recovering anhydrous acrylic acid Grant 3,932,500 - Duembgen , et al. January 13, 1 | 1976-01-13 |
| Nuclear Alkylation Of Anilins Grant 3,868,420 - Evans , et al. February 25, 1 | 1975-02-25 |
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