Issued Patents All Time
Showing 1–25 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5026534 | Process for the preparation of aqueous ammonium thiocyanate solutions | Gerhard Meyer, Gunter Sudheimer, Hans-Peter Grothaus | 1991-06-25 |
| 5021603 | Thiuram polysulfide production | Manfred Bergfeld, Ludwig Eisenhuth | 1991-06-04 |
| 4898978 | Process for the preparation of N,N'-disubstituted guanidines | Manfred Bergfeld, Ludwig Eisenhuth | 1990-02-06 |
| 4783572 | Process for the preparation of ethylene-ethane mixtures | Klaus Wohlfahrt, Manfred Bergfeld | 1988-11-08 |
| 4746561 | Polyimide-containing cover layer for a printed circuit element | Ernst F. Kundinger, Erich Klimesch, Jeffery D. Lasher | 1988-05-24 |
| 4705720 | Flexible multi-layer polyimide laminates | Ernst F. Kundinger, Erich Klimesch, Jeffery D. Lasher | 1987-11-10 |
| 4699841 | Flexible multilayer polymide laminates | Ernst F. Kundinger, Erich Klimesch, Jeffery D. Lasher | 1987-10-13 |
| 4675246 | Flexible multilayer polyimide laminates | Ernst F. Kundinger, Erich Klimesch, Jeffrey D. Lasher | 1987-06-23 |
| 4670556 | Process for the production of thiazolyl-2-sulphenamides | Ludwig Eisenhuth, Manfred Bergfeld | 1987-06-02 |
| 4558135 | Process for the preparation of dithiazolyl disulfides | Manfred Bergfeld, Ludwig Eisenhuth | 1985-12-10 |
| 4522880 | Thick polyimide-metal laminates with high peel strength | Werner Klostermeier, Jeffery D. Lasher, Gerhard Meyer | 1985-06-11 |
| 4486603 | Preparation of trans cyclohexane 1,4-diamine | Manfred Bergfeld | 1984-12-04 |
| 4471019 | Water-containing water glass fibers | Arno Wegerhoff, Walter Brodowski, Heinz Beck, Ernst Seeberger, Gerhard Steenken +1 more | 1984-09-11 |
| 4468526 | Process for the preparation of thiuram disulfides | Ludwig Eisenhuth, Manfred Bergfeld | 1984-08-28 |
| 4467114 | Preparation of trans cyclohexane 1,4-diurea | Manfred Bergfeld | 1984-08-21 |
| 4459424 | Process for the preparation of thiuram disulfides | Ludwig Eisenhuth, Manfred Bergfeld | 1984-07-10 |
| 4457871 | Preparation of trans cyclohexane,1,4-diisocyanate and related compounds | Manfred Bergfeld | 1984-07-03 |
| 4442281 | Thermoplastic polyurethane-elastomers from cyclohexane-1,4-diisocyanate | Peter Hentschel, Walter Brodowski | 1984-04-10 |
| 4439370 | Preparation of trans cyclohexane 1,4-diisocyanate | Manfred Bergfeld | 1984-03-27 |
| 4437960 | Method for the crosslinking of cathodically depositable coating agents | Hilde Kersten, Helmut Magerlein | 1984-03-20 |
| 4433078 | Waterdispersible cationic resins for electrodeposition | Hilde Kersten, Anton Toth | 1984-02-21 |
| 4418211 | Preparation of trans-cyclohexane-1,4-disulphonyl urea | Manfred Bergfeld | 1983-11-29 |
| 4404401 | Process for the preparation of para-amino-diphenylamine | Manfred Bergfeld | 1983-09-13 |
| 4393238 | Method for the production of blocked isocyanates | Manfred Bergfeld | 1983-07-12 |
| 4357447 | Polymere N-halogenamide auf basis von acryl-und methacrylamid | Manfred Bergfeld, Rainer Zielke | 1982-11-02 |