Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5306805 | Process for the preparation of polyarylene sulphides | Wolfgang Arlt, Wolfgang Alewelt, Manfred Schmidt, Erhard Tresper, Wolfgang Eisermann | 1994-04-26 |
| 4639507 | Process for the isolation of polyarylene sulphide | Wolfgang Alewelt, Wolfgang Eisermann, Erhard Tresper, Martin Ullrich | 1987-01-27 |
| 4631338 | Process for the isolation of thermoplastic polycarbonate from solution with vapor of benzene or alkylbenzene | Uwe Hucks, August Horsthemke | 1986-12-23 |
| 4588809 | Process for isolating pulverulent chlorinated aliphatic polymers from their aliphatic chlorohydrocarbon solutions | Diez Heine, Franz Alfes, Wolfgang Eisermann | 1986-05-13 |
| 4578476 | Process for the production of 2-aryl-4-acyl-1.3.4-oxdiazolones-(5) | Manfred Schmidt | 1986-03-25 |
| 4465840 | Process for the production of (thio) hydantoins | Bernhard Schulte, Wolfgang Jakob, Willi Dunwald | 1984-08-14 |
| 4465839 | Process for the production of hydantoins | Bernhard Schulte, Wolfgang Jakob, Willi Dunwald | 1984-08-14 |
| 4430483 | Process for the production of water-resistant, film-forming chlorinated polymers | Franz Alfes, Hermann Perrey, Diez Heine, Friedrich Kowitz | 1984-02-07 |
| 4387251 | Process for the preparation of pure 4,4'-dihydroxyphenyl alkanes or 4,4'-dihydroxydiphenyl cycloalkanes | Ludwig Bottenbruch, Wolfgang Jakob | 1983-06-07 |
| 4281095 | Coating compositions obtained by reacting amino carboxylic acids derivatives with polyisocyanates and compounds containing carboxylic groups to produce polymers containing hydantoin rings and amide groups | Willi Dunwald, Jurgen Lewalter, Rudolf Merten, Ludwig Rottmaier, Bernhard Schulte | 1981-07-28 |
| 4238351 | Polyarylamide, their production and their use as absorbers for ultraviolet rays | Franz Alfes, Wolfgang Jacob, Ludwig Bottenbruch | 1980-12-09 |