Issued Patents All Time
Showing 1–25 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8933146 | Process for producing hard coating systems based on aqueous polyurethane dispersions | Stefan Sommer, Harald Blum, Christoph Irle, Jan Weikard, Erhard Luehmann | 2015-01-13 |
| 7384576 | Lead-free mixture as a radiation protection additive | Hardy Jüngermann, Jurgen Kirsch, Heinz Pudleiner, Burkhard Werden, Edgar Leitz +10 more | 2008-06-10 |
| 6177494 | N,N'-disubstituted N-(2-hydroxyalkyl)-ureas | James-Michael Barnes, Hans-Dieter Ruprecht, Hans-Georg Wussow | 2001-01-23 |
| 6051632 | Free-flowing compression molding compositions and processes for their production and use | Lutz Schrader, Hanns P. Muller | 2000-04-18 |
| 5810604 | Electronic book and method | Derrill P. Williams | 1998-09-22 |
| 5730602 | Computerized method and apparatus for teaching handwriting | Harry S. Gierhart | 1998-03-24 |
| 5574123 | Heat curable, one-component polyurethane reactive compositions | Manfred Bock, Holger Casselmann, Werner Drouve, Gerhard Grogler, Heinrich Hess | 1996-11-12 |
| 5183876 | Urea group-containing polyisocyanates modified with long chain compounds and a process for their preparation | Gerhard Grogler, Heinrich Hess | 1993-02-02 |
| 5159046 | Process for the preparation of highly elastic plastics | Gerhard Grogler, Andreas Ruckes, Heinrich Hess, Robert Eiben, James-Michael Barnes | 1992-10-27 |
| 5143987 | Polyurethane reactive adhesive compounds containing finely dispersed polymers | Eduard Hansel, Heinrich Hess, Gunter Arend, Gerhard Grogler | 1992-09-01 |
| 5109096 | Polyurethane-based one-component reactive adhesives | Heinrich Hess, Gerhard Grogler, Horst Stepanski, Gunter Arend, Hans Tups | 1992-04-28 |
| 5104959 | Polyurethane-based reactive adhesives in which the isocyanate is stabilized by a polyether amine | Heinrich Hess, Gerhard Groglerl, Horst Stepanski, Rudolf Hombach, Walter Schafer | 1992-04-14 |
| 5100998 | Process for improving the flowability of dimerized 2,4-tolylenediisocyanate | Gerhard Grogler, Heinrich Hess, Lutz Georgias, Helmut Hurnik, Hans-Dieter Thomas | 1992-03-31 |
| 5091497 | Heat-curing polyether-polyester-polyurethane ureas | Gerhard Grogler, Heinrich Hess, Eduard Hansel, Thomas Scholl | 1992-02-25 |
| 5077339 | Heat-curing reactive powders based on polyurethanes | Gerhard Grogler, Heinrich Hess, Werner Rasshofer | 1991-12-31 |
| 5064875 | Process for the preparation of heat-stable polyurethane urea elastomers | Gerhard Grogler, Urs Thiery, Andreas Ruckes, Heinrich Hess | 1991-11-12 |
| 5025039 | Process for the production of molded polyurethane foams and the molded foams obtained by this process | Alfred Neuhaus, Otto Ganster | 1991-06-18 |
| 4994611 | Process for the production of N,N'-bis-(3-aminophenyl)-ureas | Andreas Ruckes, Gerhard Grogler | 1991-02-19 |
| 4945120 | Process for the production of polyurethane foams using sterically hindered aromatic diamines | Gunter Oertel, Eckehard Weigand, Rolf Wiedermann | 1990-07-31 |
| 4919878 | Process for the production of polyurethane-and/or polyurea-based moldings | Friedhelm Pilger, Otto Ganster | 1990-04-24 |
| 4902825 | N,N'-bis(trans-4-isocyanatocyclohexyl)urea, a process for its preparation and its use | Andreas Ruckes, Werner Rasshofer, Gerhard Grogler | 1990-02-20 |
| 4894429 | Process for the preparation of polyurethanes containing uretdione rings | Gerhard Grogler, Heinrich Hess | 1990-01-16 |
| 4882361 | Process for the production of polyurethane urea elastomers | Andreas Ruckes, Gerhard Grogler | 1989-11-21 |
| 4882411 | Process for the production of cold-setting polyurethane urea elastomers | Gerhard Grogler, Andreas Ruckes, Heinrich Hess | 1989-11-21 |
| 4855504 | Process for producing higher molecular weight amino compounds having reduced monomeric amine content | Werner Rasshofer, Ernst Grigat, Gerhard Grogler, Heinrich Hess | 1989-08-08 |