Issued Patents All Time
Showing 26–50 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4698371 | Process for the preparation of optionally cellular polyurethane-polyurea molded parts using urethane group- and isocyanurate group-containing 2,4- and/or 2,6-toluene diisocyanates | Frank Werner, Hans U. Schmidt | 1987-10-06 |
| 4698410 | Process for the preparation of high-temperature-resistant dense or cellular polyurethane elastomers | Wolfgang Straehle, Uwe Schuett | 1987-10-06 |
| 4668708 | Process for the preparation of elastic polyurethane flexible foams usable in cold-mold techniques to produce molded articles | Gerhard Mueller, Wolfgang Jarre, Edwin Baumann, Ingolf Buethe | 1987-05-26 |
| 4656201 | s-Triazine-radical-containing polyether polyol mixtures, process for their preparation and their use | Joachim Jaehme | 1987-04-07 |
| 4617225 | Sheet-like reinforced material | Peter Horn, Edwin Baumann, Peter Gerarts | 1986-10-14 |
| 4611083 | Liquid, urea group-containing polyisocyanate mixtures | Ingolf Buethe, Willibald Schonleben | 1986-09-09 |
| 4598125 | Preparation of impact-resistant nylon molding materials by alkaline lactam polymerization | Peter Horn, Hellmut Bunsch, Robert Gehm | 1986-07-01 |
| 4595705 | Process for the preparation of optionally cellular polyurethane polyurea molded parts | Frank Werner, Peter Horn, Hans U. Schmidt | 1986-06-17 |
| 4590219 | Process for the preparation of elastomeric molded parts having urethane or urethane and urea groups with improved light fastness and weather resistance | Dietmar Nissen, Hans U. Schmidt | 1986-05-20 |
| 4590242 | Production of low-shrinkage nylon moldings | Peter Horn, Hellmut Bunsch, Anton Hesse, Dietmar Nissen, Walter Heckmann | 1986-05-20 |
| 4582926 | Process for the preparation of polyester or polyether-polyester polyol | Wolfgang Straehle | 1986-04-15 |
| 4581387 | Internal release agents for polyisocyanate addition polymerization, their use in the preparation of cellular, microcellular, and noncellular polyurethane-polyurea molded parts having improved demolding properties | Frank Werner, Hans U. Schmidt | 1986-04-08 |
| 4560708 | Polyisocyanurate/polyurethane elastomers based on suspensions of crystalline polyesters and polyhydroxyl compounds | Peter Horn, Anton Hesse, Walter Mann, Wolfram Frank, Walter Heckmann | 1985-12-24 |
| 4546039 | Process for bonding lignocellulose-containing raw materials with a prepolymer based on a urethane-modified diphenylmethane diisocyanate mixture | Heinrich Horacek, Otto Wittmann, Johann Mayer | 1985-10-08 |
| 4514526 | Storage-stable tris(hydroxyalkyl)isocyanurate polyol dispersions, process for their preparation and their utilization | Helmut Ganss, Wolfram Frank | 1985-04-30 |
| 4507475 | Process for purification of crude polyether polyols | Wolfgang Straehle, Raymond Denni | 1985-03-26 |
| 4481309 | Process for the preparation of cellular and non-cellular polyurethanes | Wolfgang Straehle, Ingolf Buethe | 1984-11-06 |
| 4478960 | Diphenylmethane diisocyanate-based liquid polyisocyanate mixtures containing urethane groups, process for their preparation and their use for the preparation of flexible polyurethane foams | Ingolf Buethe, Gisbert Schleier, Reinhard Peters | 1984-10-23 |
| 4452921 | Process for the preparation of polyurethane-polyisocyanurate foams | Heinrich Horacek, Robert Gehm, Wolfram Frank | 1984-06-05 |
| 4452997 | Process for the preparation of polyester polyols and/or polyester-polyether polyols | Wolfgang Straehle | 1984-06-05 |
| 4447561 | Stable water glass solutions, process for their preparation and use for organosilicate foams as well as a production process therefor | Peter Horn, Robert Gehm, Artur Roeber | 1984-05-08 |
| 4440705 | Process for the preparation of cellular and non-cellular polyurethane elastomers | Dietmar Nissen, Wolfgang Straehle | 1984-04-03 |
| 4435537 | Storage stable dispersions of aromatic polyesters in polyhydroxyl compounds and their preparation | Peter Horn, Anton Hesse, Walter Heckmann, Ulrich Lebert, Alfred Guthmann | 1984-03-06 |
| 4421872 | Process for the preparation of elastic flexible polyurethane foams | Ingolf Buethe, Wolfgang Straehle, Reinhard Peters | 1983-12-20 |
| 4389454 | Molded foamed polyurethane part having a lightweight skin and a process for its manufacture | Heinrich Horacek, Dietmar Hobein | 1983-06-21 |