Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698601 | Process for the production of open-celled rigid polyurethane foams useful as insulating materials | Hans-Joachim Scholl | 1997-12-16 |
| 5418258 | Process for the production of substantially closed-cell rigid foams containing urethane, urea and biuret groups showing excellent adhesion to solid surfaces and their use | Hans-Joachim Scholl | 1995-05-23 |
| 5386054 | Process for the purification of polyisocyanates, the polyisocyanates thus purified and use thereof | Hans-Joachim Scholl, Hanns P. Muller | 1995-01-31 |
| 5350780 | Process for the preparation of substantially closed-cell rigid foams containing urethane, urea, biuret, and isocyanurate groups and a method of use thereof | Hans-Joachim Scholl | 1994-09-27 |
| 5202358 | Process for the preparation of liquid storable organic isocyanates containing carbodiimide and/or uretone imine groups and their use for the preparation of polyurethane plastics | Hans-Joachim Scholl | 1993-04-13 |
| 5124370 | Polyisocyanate mixtures containing isocyanurate groups, a process for their production and their use for the production of polyurethane foams | Hans-Joachim Scholl, Gunter Gleitsmann | 1992-06-23 |
| 5070115 | Substantially closed-cell rigid foams containing urethane, urea and biuret groups and a process for their production | Hans-Joachim Scholl | 1991-12-03 |
| 4198487 | Process for the production of inorganic-organic synthetic foam materials | Hans-Joachim Scholl, Dieter Dieterich, Peter H. Markusch | 1980-04-15 |
| 4190459 | Process for the production of mineral fiber mats | Peter H. Markusch, Dieter Dieterich, Werner Dietrich | 1980-02-26 |