Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5071960 | High molecular weight protein/fatty acid condensation products which are very well tolerated by the skin and mucosa | Angelika Turowski, Jochen M. Quack, Alwin Reng | 1991-12-10 |
| 4970007 | Aqueous surfactant mixtures, and the use thereof in the recovery of crude oil | Dennis Miller, Manfred Schmidt, Sigmar-Peter von Halasz | 1990-11-13 |
| 4924084 | Device for determining surface moisture | Helmut Lask, Kurt Dryczynski | 1990-05-08 |
| 4413121 | Cellulose ethers and cellulose mixed ethers having at least one phosphorus-containing substituent, and process for their manufacture | Lothar Brandt, Hans-Jerg Kleiner | 1983-11-01 |
| 4396433 | Cellulose ether-based gel-forming composition and methods of use and preparation thereof | Lothar Brandt | 1983-08-02 |
| 4379918 | Process for preparing water-soluble phosphonomethyl ethers of cellulose | Lothar Brandt | 1983-04-12 |
| 4363784 | Apparatus for continuously producing water-soluble hydroxyalkyl cellulose and related ethers | Josef Hilbig, Hans Kunkler, Klaus Stolting, Wolfgang Schminke | 1982-12-14 |
| 4358587 | Water-soluble cellulose mixed ethers which contain a phosphonomethyl substituent and a process for preparing same | Lothar Brandt | 1982-11-09 |
| 4337328 | Acrylic polymers having a high swellability in water | Eberhard Perplies, Gerhard Buchberger | 1982-06-29 |
| 4336299 | Use of modified cellulose hydrate fibers in the manufacture of bonded non-woven fabrics and products prepared in this manner | Reinhart Mayer, Wilhelm Fischer | 1982-06-22 |
| 4316982 | Process for reducing the viscosity of cellulose ethers by means of ozone and application thereof | Eberhard Perplies | 1982-02-23 |
| 4310663 | Continuous process for producing water-soluble hydroxyalkyl cellulose and related ethers | Josef Hilbig, Hans Kunkler, Klaus Stolting, Wolfgang Schminke | 1982-01-12 |
| 4250306 | Process and equipment for preparing swellable cross-linked carboxyalkylcelluloses from natural cellulose or cellulose hydrate and use thereof | Helmut Lask, Ehrenfried Nischwitz, Hans Sommer | 1981-02-10 |
| 4248595 | Process for preparing swellable cross-linked carboxyalkylcelluloses, in the form of fibers, from cellulose hydrate and use thereof | Helmut Lask | 1981-02-03 |
| 4200558 | Method of producing hydrophilic articles of water-insoluble polymers | Michael Kostrzewa, Helmut Lask | 1980-04-29 |
| 4197371 | Water vapor absorbing and transmitting sheet material of rubber containing a swellable cross-linked cellulose ether or starch ether and a process for the manufacture thereof | Walter Schermann, Wilhelm Fischer | 1980-04-08 |
| 4194995 | Water vapor absorbing and transmitting adhesive, a process for the manufacture of this adhesive and use thereof | Walter Schermann, Wilhelm Fischer | 1980-03-25 |
| 4194024 | Method of making hydrophilic articles of water-insoluble polymers | Michael Kostrzewa, Helmut Lask | 1980-03-18 |
| 4187342 | Bonded fiber web, which is capable of absorbing water vapor comprising a swellable cellulose ether in fiber form | Helmut Lask, Ehrenfried Nischwitz, Wilhelm Fischer | 1980-02-05 |
| 4186238 | Hydrophilic articles of water-insoluble polymers | Michael Kostrzewa, Helmut Lask | 1980-01-29 |
| 4181637 | Sheet-like structure of polyurethane, which is capable of absorbing water vapor and transmitting water vapor | Walter Busch, Wilhelm Fischer | 1980-01-01 |