Issued Patents All Time
Showing 101–125 of 186 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5233037 | Production of caprolactam by thermal depolymerization of polyamide 6 | Werner Nielinger, Edgar Ostlinning, Karsten-Josef Idel, Dieter Freitag | 1993-08-03 |
| 5231212 | Process for the continuous preparation of dialkyl carbonates | Alexander Klausener, Reinhard Langer, Franz-Josef Mais | 1993-07-27 |
| 5221718 | Process for the preparation of copolymers containing nitrile groups based on ethylenically unsaturated monomers | Heinrich Schrage, Hugo Vernaleken | 1993-06-22 |
| 5219976 | Process for the preparation of phenol resins using by-products of the chlorination of butadiene as reactants | Manfred Abele, Heinrich Schrage, Hugo Vernaleken | 1993-06-15 |
| 5218135 | Process for the preparation of dialkyl carbonates | Alexander Klausener | 1993-06-08 |
| 5214100 | Use of certain phenolic resins for reinforcing rubber vulcanizates | Manfred Abele, Heinrich Schrage, Hugo Vernaleken | 1993-05-25 |
| 5196592 | Process for the preparation of diphenylamines | Otto Immel, Helmut Waldmann, Reinhard Langer, Gerhard Darsow | 1993-03-23 |
| 5185467 | Process for the preparation of 2,2-bis-(aminophenyl)-propane | Dieter Arlt | 1993-02-09 |
| 5153291 | Trialkylsilyloxy-1,1-diphenyl ethylenes and polymers produced therewith | Edgar Leitz, Ludwig Bottenbruch, Karl-Heinz Ott | 1992-10-06 |
| 5149856 | Process for the preparation of carbonic acid diesters containing at least one aromatic ester group | Norbert Schon, Wolfgang Ebert | 1992-09-22 |
| 5137949 | Polydiorganosiloxane-polycarbonate block co-codensates with improved protection against UV light | Winfried Paul, Wolfgang Nising, Thomas Scholl | 1992-08-11 |
| 5134220 | Polyester and polyester carbonate based on 3,8-dihydroxy-5a, 10b-diphenylcoumarano-2',3',2,3-coumarane | Volker Serini, Ulrich Grigo | 1992-07-28 |
| 5128437 | Polycarbonate from bi(tetrahydrofuran)di phenol | Uwe Westeppe, Ulrich Grigo, Klaus Berg | 1992-07-07 |
| 5108835 | Coextruded double walled sheet of linear polycarbonate resin | Heinrich Hähnsen, Wolfgang Nising, Thomas Scholl, Ulrich Grigo | 1992-04-28 |
| 5099031 | Process for the preparation of di- and trialkyl-4'-phthalimidomethylfurocoumarins | Gamal K. Mikhail | 1992-03-24 |
| 5087754 | Process for the preparation of N,N-dialkylaniline | Heinrich Pelster, Lothar Puppe, Peter Wimmer | 1992-02-11 |
| 5084524 | Block copolymers based on cyclic aliphatic carbonates and/or esters on the one hand and cyclic aromatic carbonates on the other hand | Edgar Leitz, Karl-Heinz Ott, Alfred K. Jung, Ulrich Grigo, Norbert Schon | 1992-01-28 |
| 5071921 | Thermoplastic block copolymers based on cyclic carbonates or esters | Herbert Eichenauer, Christian Lindner, Edgar Leitz, Karl-Heinz Ott, Peter Mues +2 more | 1991-12-10 |
| 5072017 | Process for the preparation of P-substituted O-benzylphenols | Gunter Klug, Peter Mues, Lothar Puppe | 1991-12-10 |
| 5071943 | Process for the isolation of tetrachlorobutane and for the production of phenolic resins from mixtures of chlorine-substituted hydrocarbons | Manfred Abele, Michael Happ, Werner Obrecht, Heinrich Schrage, Hugo Vernaleken | 1991-12-10 |
| 5068434 | Process for the preparation of N-alkylated anilines | Gunter Klug, Lothar Puppe | 1991-11-26 |
| 5068321 | Carbonic acid esters of polysaccharides and a process for their production | Alexander Klausener, Klaus Szablikowski, Klaus Balser, Michaela Wilke | 1991-11-26 |
| 5064885 | Stabilized aliphatic polycarbonates | Friedemann Muller, Edgar Leitz, Herbert Eichenauer, Karl-Heinz Ott | 1991-11-12 |
| 5064899 | Antistatic, thermoplastic moulding compounds based on aromatic vinyl polymers | Norbert Schon, Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan | 1991-11-12 |
| 5061752 | Antistatic, thermoplastic moulding compounds based on aromatic vinyl polymers II | Norbert Schon, Herbert Eichenauer, Karl-Heinz Ott, Alfred Pischtschan | 1991-10-29 |