Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9701617 | Process for producing diamines and polyamines of the diphenylmethane series | Stefan Wershofen, Richard Adamson, Fritz Pohl, Knut Sommer | 2017-07-11 |
| 7662634 | Method and device for determining the isomer composition in isocyanate production processes | Jochen Mahrenholtz, Andrea Wimschneider, Hans-Georg Pirkl, Stefan Dresely, Jeffrey Bolton +4 more | 2010-02-16 |
| 7528283 | Process for preparing diamines and polyamines from the diphenylmethane series | Fritz Pohl, Jeffrey Bolton, Richard Adamson, Rudolf Uchdorf | 2009-05-05 |
| 7205430 | Production of di- and polyisocyanates of the diphenylmethane series with defined acidity | Ulrich Liman, Robert Vieler, Ralf Echterhoff | 2007-04-17 |
| 7186857 | Process for the preparation of di- and polyamines of the diphenylmethane series | Stefan Wershofen, Stefan Peter Grabowski | 2007-03-06 |
| 6720455 | Process for the production of polyisocyanates of the diphenylmethane series with a reduced color value | Torsten Hagen, Friedhelm Kamper, Daniel Koch | 2004-04-13 |
| 6649798 | Method for production of diaminodiphenylmethanes | Stephan Klein, Dirk Grotjohann, Christine Mendoza-Frohn, Daniel Koch, Hans-Georg Pirkl +2 more | 2003-11-18 |
| 5601881 | Method and device for coating a body rotating about an axis | Wolfgang Grimm, Dirk Brüning, Klaus Recker, Hans-Dieter Ruprecht | 1997-02-11 |
| 5346387 | Mold for manufacturing polyurethane parts for using the rim process | Klaus Schulte | 1994-09-13 |
| 4729863 | Process and molding tool for the manufacture of molded parts having areas in the form of grids, grills or gratings, such as motor vehicle soft-faces, spoilers, bumpers from a fluid mass | Klaus Schulte, Lothar Klier | 1988-03-08 |
| 4474310 | Apparatus for producing a reaction mixture | Reiner Raffel, Ferdinand Althausen | 1984-10-02 |
| 4400331 | Dialkoxy-phosphonyl-N-alkyl-formic acid amides | Peter Haas, Peter Seifert, Kuno Wagner, Kurt Findeisen, Klaus Konig | 1983-08-23 |
| 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 | Peter Haas, Peter Seifert, Kuno Wagner, Kurt Findeisen, Klaus Konig | 1982-05-04 |
| 4313909 | Method and an apparatus for producing a reaction mixture for forming solid or cellular substances from flowable reactants and optionally fillers | Heinrich Boden, Bernd Sowade | 1982-02-02 |
| 4306037 | Process for the manufacture of elastic polyurethane foams capable of being flame laminated and high frequency welded | Klaus Konig, Peter Seifert, Wolfgang Reichmann, Hans-Walter Illger | 1981-12-15 |
| 4223095 | Flame-resistant polyurethane foam and a process for its production | Heinz Esser, Hans-Walter Illger, Willi Kost, Alberto C. Gonzalez-Dorner | 1980-09-16 |
| 4190417 | Process for dyeing and printing sheets | Helmuth H. Prochaska, Gert Baumann, Peter Rasche, Alberto Gonzales-Dorner | 1980-02-26 |