Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5095164 | Process for cleaving alkyl tert.-alkyl ethers | Christian Gabel, Hans-Dieter Kohler, Hans-Volker Scheef | 1992-03-10 |
| 5084070 | Gum-free components containing alkyl tert.-alkyl ethers | Hans-Dieter Kohler, Bruno Schulwitz, Hans-Volker Scheef, Herbert Tachorn | 1992-01-28 |
| 5012031 | Process for the preparation of tert.-olefins | Hans-Ludwig Niederberger, Christian Gabel, Peter M. Lange, Alfred Mitschker | 1991-04-30 |
| 5008466 | Process for the isomerization of alkenes having a terminal double bond to give alkenes having an internal double bond | Hans-Dieter Kohler, Christian Gabel, Hans-Volker Scheef | 1991-04-16 |
| 4960961 | Process for the preparation of tert.-amyl alcohol (TAA) | Reiner Malessa, Christian Gabel, Hans-Volker Scheef, Mathias Lux | 1990-10-02 |
| 4950820 | Process for the hydrogenation of olefinic hydrocarbons in hydrocarbon mixtures containing tert.-alkyl alkyl ethers | Horst Reinhardt, Hans-Joachim Kramer | 1990-08-21 |
| 4804704 | Crosslinked organic resins containing SiO.sub.2 and sulphonic acid groups | Mathias Lux, Horst Reinhardt | 1989-02-14 |
| 4751343 | Process for the preparation of tertiary olefins | Horst Reinhardt | 1988-06-14 |
| 4504688 | Process for the preparation of pure alkyl tert-alkyl ethers and hydrocarbon raffinates which are largely free from isoolefins and from alkanols | Jens Herwig, Hans-Volker Scheef, Peter M. Lange | 1985-03-12 |
| 4503265 | Process for the production of methyl tert.-butyl ether (MTBE) and of hydrocarbon raffinates substantially freed from i-butene and from methanol | Martin Becker | 1985-03-05 |
| 4431528 | Process for the hydrogenation of hydrocarbons | Horst Reinhardt, Herbert Tschorn | 1984-02-14 |
| 4409421 | Process for the preparation of pure tert.-olefins | Jens Herwig, Bruno Schulwitz, Hans-Volker Scheef, Peter M. Lange | 1983-10-11 |
| 4377393 | Process for the preparation of a mixture consisting essentially of iso-butene oligomers and methyl tert.-butyl ether, its use, and fuels containing such mixture | — | 1983-03-22 |
| 4371725 | Process for the preparation of tertiary olefins and n-alkanols | Jens Herwig, Hans-Volker Scheef | 1983-02-01 |
| 4330679 | Process for the preparation of alkyl tert.-alkyl ethers | Hans-Dieter Kohler | 1982-05-18 |
| 4297512 | Process for the preparation of triethylamine | Klaus Mainusch, Klaus Münter | 1981-10-27 |