Issued Patents All Time
Showing 76–98 of 98 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4695630 | Cycloacetals | — | 1987-09-22 |
| 4681903 | Polyester polyols, a process for their production and their use in the isocyanate polyaddition process | Hans-Ulrich Weber, Claus-Dieter Sommerfeld, Manfred Giersig, Rolf Wiedermann | 1987-07-21 |
| 4644017 | Process for the production of polyisocyanate addition products and composite polyisocyanate addition products | Hans-Albrecht Freitag, Geza Avar, Claus-Dieter Sommerfeld, Hans-Walter Illger | 1987-02-17 |
| 4639478 | Bismorpholines, a process for their preparation and their use for protection against hydrolysis | James-Michael Barnes, Wilhelm Goyert | 1987-01-27 |
| 4617387 | Bismorpholines and a process for their preparation | James-Michael Barnes, Wilhelm Goyert | 1986-10-14 |
| 4546121 | Use of polyhydroxyalkyl monoureas for polyurethane foams, dispersions of the polyhydroxyalkyl monoureas in polyols and new tris-hydroxyalkyl monoureas | Geza Avar, Hartwig Grammes | 1985-10-08 |
| 4540626 | Polyhydroxyalkyl polycarbonamides for the production of flame-resistant polyurethane rigid foams and integral foams | Geza Avar, Hartwig Grammes | 1985-09-10 |
| 4493909 | Poly-N,N-hydroxyalkylamides of polybasic carboxylic acids and a process for the production thereof | Hans Hettel | 1985-01-15 |
| 4478893 | Polyisocyanate addition products useful as mold release agents and a process for their production | Manfred Schonfelder, Geza Avar, Helmut Steinberger | 1984-10-23 |
| 4448503 | Automatic high speed microfilm searching system | Norman N. Axelrod, Rainer Noess | 1984-05-15 |
| 4430453 | Polyurethane foams suitable for high frequency welding and process for producing the same | Peter Seifert | 1984-02-07 |
| 4423194 | Polyquaternary ammonium compounds, their preparation, their use in the production of paper and paper treatment agents containing them | Wilfried Lobach, Gunter Kolb, Guter Sackmann, Joachim Probst | 1983-12-27 |
| 4400331 | Dialkoxy-phosphonyl-N-alkyl-formic acid amides | Heinz Muller, Peter Seifert, Kuno Wagner, Kurt Findeisen, Klaus Konig | 1983-08-23 |
| 4379861 | Process for the production of polyurethanes using morpholine compounds as catalysts | Hans-Albrecht Freitag | 1983-04-12 |
| 4350777 | Impermeable molded articles of cellular polyurethane elastomers produced with organofunctional polysiloxane-derivatives and their use as spring elements | Paul Henrichs, Hans-Georg Hoppe, Wolfgang Grimm | 1982-09-21 |
| 4331778 | Process for the production of polyurethane plastics | Claus-Dieter Sommerfeld, Kuno Wagner, Manfred Kapps | 1982-05-25 |
| 4328321 | Dialkoxy-phosphonyl-N-alkyl-formic acid amides and their use as additives for the production of polyurethane foams which are capable of being flame laminated and high frequency welded | Heinz Muller, Peter Seifert, Kuno Wagner, Kurt Findeisen, Klaus Konig | 1982-05-04 |
| 4310633 | Hexahydrotriazine carboxylates and the use thereof as catalysts in the production of polyisocyanurate plastics | Johannes Blahak, Rolf Wiedermann | 1982-01-12 |
| 4260754 | Hexahydrotriazine carboxylates and the use thereof as catalysts in the production of polyisocyanurate plastics | Johannes Blahak, Rolf Wiedermann | 1981-04-07 |
| 4248930 | The production of polyurethane resins and laminates | Johannes Blahak, Werner Mormann, Manfred Kapps | 1981-02-03 |
| 4235976 | Use of phosphonates as trimerization catalysts for the production of polyisocyanurate synthetic resins | Rolf Wiedermann | 1980-11-25 |
| 4228249 | Segmented polyurethane resins | Johannes Blahak, Roland Gipp, Kuno Wagner, Erwin Muller, Jan Mazanek | 1980-10-14 |
| 4186257 | Process for the preparation of new segmented polyurethane resins derived from block copolymers being linked together through ester and/or urethane and/or urea groups | Johannes Blahak, Roland Gipp, Kuno Wagner, Erwin Muller, Jan Mazanek | 1980-01-29 |