Issued Patents All Time
Showing 1–25 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5210273 | Process for the preparation of mono- and oligourethanes | Helmut Reiff | 1993-05-11 |
| 5130457 | Process for the preparation of N,N-disubstituted mono- and oligourethanes | Josef Sanders | 1992-07-14 |
| 5099058 | N, N-disubstituted oligourethanes and polyurethanes, a process for their preparation, and their use in the production of plastics | Josef Sanders | 1992-03-24 |
| 5091582 | Process for the preparation of aromatic polyamines | Josef Sanders, Gerhard Grogler | 1992-02-25 |
| 5021520 | Crosslinked polyurethane-polyurea powders, a process for their production and their use as fillers in two-component polyurethane coating compositions | Helmut Reiff, Rene Stepanek | 1991-06-04 |
| 4975516 | Diaminoarylsulfones useful for the preparation of polyurethane elastomers | Klaus-Peter Heise, Gerhard Grogler, Karlfried Wedemeyer | 1990-12-04 |
| 4870206 | Aromatic polyisocyanates, their preparation and use as components for adhesives | Josef Sanders, Rudolf Hombach, Helmut Reiff, Manfred Dollhausen | 1989-09-26 |
| 4797427 | Aromatic diamines containing sulfonic acid aryl esters, a process for their production and their use in the production of polyurethane plastics | Josef Sanders, Helmut Reiff, Gerhard Balle | 1989-01-10 |
| RE32677 | Polyamines, a process for the production of polyamines and their use in the production of polyurethanes | Werner Rasshofer, Gerhard Grogler, Klaus Konig | 1988-05-24 |
| 4723032 | Modified polyamines and a process for their production | Werner Rasshofer | 1988-02-02 |
| 4569981 | Solid, water-dispersible plastics precursors containing isocyanate groups, a process for the production of aqueous plastics dispersions using such plastics precursors | Wolfgang Wenzel | 1986-02-11 |
| 4565645 | Single-stage process for the production of polyamines and polyamines produced by such process | Werner Rasshofer | 1986-01-21 |
| 4540720 | Polyamines, a process for the production of polyamines and their use in the production of polyurethanes | Werner Rasshofer, Gerhard Grogler, Klaus Konig | 1985-09-10 |
| 4532266 | Polymer-containing polyether polyamines and a process for the production of these polyamines | Werner Rasshofer, Gerhard Balle, Holger Meyborg | 1985-07-30 |
| 4496491 | Aromatic diisocyanates containing N,N-disubstituted sulfonamide groups and processes for their production | Richard Kopp, Gerhard Grogler, Helmut Reiff | 1985-01-29 |
| 4454071 | Isocyanatoaryl sulphochlorides | — | 1984-06-12 |
| 4440901 | Process for the production of plastic based on polyisocyanates | Helmut Reiff | 1984-04-03 |
| 4418160 | Polyamines and processes for the production of such polyamines and of polyurethane plastics therefrom | Werner Rasshofer, Holger Meyborg | 1983-11-29 |
| 4386218 | Polyamines and processes for the production of such polyamines and of polyurethane plastics therefrom | Werner Rasshofer, Holger Meyborg | 1983-05-31 |
| 4385137 | Dispersions of polymers containing sulphonate groups, a process for the production thereof and their use as coating agents | Otto Lorenz | 1983-05-24 |
| 4359426 | Process for the production of aromatic isocyanates containing aromatically bound sulfochloride groups | Heinz U. Blank, Erich Wolters, Norbert Langenfeld | 1982-11-16 |
| 4337333 | Substituted polyisocyanate or polyisocyanate mixtures of the diphenyl methane series containing chlorosulfonyl groups | Helmut Reiff | 1982-06-29 |
| 4306998 | Process for the preparation of stable aqueous dispersions of oligourethanes or polyurethanes and their use as coating compounds for flexible or rigid substrates | Wolfgang Wenzel, Gunter Mertens | 1981-12-22 |
| 4293474 | Polyurethane ionomer dispersions containing electrolytes | Peter H. Markusch | 1981-10-06 |
| 4289672 | Sizing glass fibers for thermoplastic resin reinforcement | Klaus Friederich, Gerhard Heinze, Helmut Reiff, Dietrich Michael, Manfred Schon +3 more | 1981-09-15 |