Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654479 | 4-substituted bis(2,6-diisopropylphenyl)-carbodiimides, their preparation, their use, and 4-substituted 2,6-diisopropylphenyl isocyanates which can be used for their preparation | Friedhelm Lehrich, Bernd Bruchmann, Helmut Tesch, Roland Minges, Johann Swoboda +3 more | 1997-08-05 |
| 5621138 | 4-substituted bis (2,6-diisopropylphenyl)- carbodiimides, their preparation, their use, and 4-substituted 2,6-diisopropylphenyl isocyanates which can be used for their preparation | Friedhelm Lehrich, Bernd Bruchmann, Helmut Tesch, Roland Minges, Johann Swoboda +3 more | 1997-04-15 |
| 5597942 | Carbodiimides and/or oligomeric polycarbodiimides based on 1 3-bis (1-methyl-1-isocyanatoethyl) benzene their use as hydrolysis stabilizers | Friedhelm Lehrich, Manfred Genz, Bernd Bruchmann, Helmut Tesch, Roland Minges +1 more | 1997-01-28 |