Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6419889 | Catalyst, process of making catalyst and process for converting nitrogen oxide compounds | Mark Crocker, Carl Van Der Grift | 2002-07-16 |
| 5089096 | Preparation of quaternary ammonium hydroxides | Evert J. Rijkhof, Johannes P. P. Tholen, Hendricus J. H. Van Der Maas | 1992-02-18 |
| 4874739 | Silver-containing catalyst, process for the preparation of the catalyst and the catalyst prepared by the process | — | 1989-10-17 |
| 4829044 | Silver catalyst and process for its preparation | Aan Hendrik Klazinga | 1989-05-09 |
| 4806518 | Process for the preparation of a silver-containing ethylene oxide catalyst and the catalyst prepared by the process | Peter Schoenmakers, Otto M. Velthuis | 1989-02-21 |
| 4783437 | Silver-containing ethylene oxide catalyst and a process for its preparation | — | 1988-11-08 |
| 4774219 | Bimetallic catalyst and process for its preparation | Petrus Franciscus Antonius Van Grinsven, Alex G. G. Limahelu | 1988-09-27 |
| 4769224 | Process for the removal of hydrogen cyanide from a gas stream | Petrus Franciscus Antonius Van Grinsven, Pieter Lammert Zuideveld | 1988-09-06 |
| 4742034 | Silver ethylene oxide catalyst and process for preparation of the catalyst | Aan Hendrik Klazinga | 1988-05-03 |
| 4731350 | Ethylene oxide catalyst | Otto M. Velthuis, Ann H. Klazinga | 1988-03-15 |
| 4728634 | Ethylene oxide catalyst | Aan Hendrik Klazinga, Otto M. Velthuis | 1988-03-01 |
| 4701437 | Ethylene oxide catalyst | Aan Hendrik Klazinga, Otto M. Velthuis | 1987-10-20 |