Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5716429 | Method for the separation of impurities from a hot synthesis gas mixture in the preparation of melamine | Julius G. T. Van Wijck, Johan J. G. Thoelen | 1998-02-10 |
| 5350849 | Process for the preparation of melamine from urea | Hendrik JANSSEN, Josephus C. Schroijen | 1994-09-27 |
| 5334768 | Process for the production of a cycloalkanone and/or a cycloalkanol | Johannes G. van Hinsberg, Ivo Spaargaren, Otto E. Sielcken | 1994-08-02 |
| 4775755 | Process for the preparation of pyrimidine and 2-alkylpyrimidine | Antonius J. J. M. Teunissen, Hubertus J. A. V. Delahaye | 1988-10-04 |
| 4745234 | Process for the preparation of .alpha.-.beta. unsaturated alcohols | Marcel A. R. Bosma | 1988-05-17 |
| 4667034 | Process for the preparation of a 2-alkylpyrimidine | Hubertus J. A. V. Delahaye, Antonius J. J. M. Teunissen | 1987-05-19 |
| 4560760 | Process for the preparation of a lactam | Roland E. van der Stoel, Marcel A. R. Bosma, Petrus H. J. Janssen | 1985-12-24 |
| 4485243 | Process for the preparation of a 2-alkylpyrrole | Roland E. van der Stoel, Petrus H. J. Janssen | 1984-11-27 |
| 4473699 | Process for the preparation of indole and skatole | Roland E. van der Stoel, Petrus H. J. Janssen | 1984-09-25 |
| 4420622 | Process for the preparation of a 5-alkyl-butyrolactone | Petrus H. J. Janssen | 1983-12-13 |
| 4328198 | Cyclic process for the preparation and processing of a hydroxylammonium salt solution | — | 1982-05-04 |
| 4246250 | Process for the preparation of a hydroxylamine salt | — | 1981-01-20 |