Richtzenhain; Hermann
Patent Applications and Registrations
Patent applications and USPTO patent grants for Richtzenhain; Hermann.The latest application filed is for "method of preparing malonic acid dialkyl esters".
- Richtzenhain; Hermann - Much-Schwellenbach DE
| Patent | Date |
|---|---|
| Method of preparing malonic acid dialkyl esters Grant 4,399,300 - Prange , et al. August 16, 1 | 1983-08-16 |
| Bis-carbalkoxy compounds and their preparation Grant 4,288,607 - Bier , et al. September 8, 1 | 1981-09-08 |
| Process for the side-chain chlorination of perhalogenated methyl aromatic compounds Grant 4,212,996 - Petersen , et al. July 15, 1 | 1980-07-15 |
| Stabilization of 1,1,1-trichloroethane with a four component system Grant 4,069,265 - Richtzenhain , et al. January 17, 1 | 1978-01-17 |
| Difficultly inflammable polyester molding compositions Grant 4,056,508 - Schmidt , et al. November 1, 1 | 1977-11-01 |
| Method of preparing p-nitrobenzoic acid Grant 4,007,223 - Feld , et al. February 8, 1 | 1977-02-08 |
| Method of preparing arylacetic acid alkyl esters Grant 3,974,202 - El-Chahawi , et al. August 10, 1 | 1976-08-10 |
| Stabilization of 1,1,1-trichloroethane with a three component system Grant 3,959,397 - Richtzenhain , et al. May 25, 1 | 1976-05-25 |
| Method of preparing aryl acetic acids Grant 3,928,429 - El-Chahawi , et al. December 23, 1 | 1975-12-23 |
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