Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4745176 | Catalytic process for preparing polycumylene from .alpha.-cumyl halide | Robert Becker, Ludwig Bottenbruch, Helmut Waldmann | 1988-05-17 |
| 4705843 | Process for the production of substituted polyaryl ethers | Gunter Stammann, Helmut Waldmann | 1987-11-10 |
| 4593116 | Process for the production of urethanes | Gunter Stammann, Robert Becker, Helmut Waldmann | 1986-06-03 |
| 4582923 | Process for the production of urethanes | Gunter Stammann, Robert Becker, Helmut Waldmann | 1986-04-15 |
| 4410743 | Process for the preparation of 2,3-dimethylbutane-2,3-diol | Klaus G. Wilms, Helmut Waldmann | 1983-10-18 |
| 4370275 | Process for the preparation of carbonic acid esters | Gunter Stammann, Robert Becker, Helmut Waldmann | 1983-01-25 |
| 4339592 | Process for the production of urethanes | Robert Becker, Christian Rasp, Gunter Stammann | 1982-07-13 |
| 4304922 | Process for the preparation of urethane | Robert Becker, Christian Rasp, Gunter Stammann | 1981-12-08 |
| 4297501 | Process for the preparation of urethanes | Robert Becker, Christian Rasp | 1981-10-27 |
| 4262130 | Process for the production of urethanes | Robert Becker, Christian Rasp | 1981-04-14 |
| 4219661 | Process for the production of urethanes | Robert Becker, Christian Rasp, Gerhard Scharfe | 1980-08-26 |