Issued Patents All Time
Showing 1–16 of 16 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, Alwin Reng, Arno Holst | 1991-12-10 |
| 4853430 | Method of increasing viscosity with fatty acid-modified polyesters and highly viscous compositions obtained thereby | Herbert Stuhler, Alwin Reng, Werner Skrypzak | 1989-08-01 |
| 4781918 | Cosmetic agents for hair and skin treatment | Manfred Hofinger, Alwin Reng | 1988-11-01 |
| 4742039 | Adsorbents based on phyllosilicic acids which have been modified so as to be organophilic | Johann Franz Hanauer, Hans-Peter Rieck, Hans-Jurgen Kalz, Armin K. Weiss | 1988-05-03 |
| 4722958 | Process for the preparation of copolymers | Josef Sauer, Friedrich Engelhardt, Kerstine Rabas, Ulrich Karsunky, Wolfram Schidlo +2 more | 1988-02-02 |
| 4654163 | Nonionic fluent pearl luster dispersions | Alwin Reng, Werner Skrypzak, Walter Kunz | 1987-03-31 |
| 4620976 | Pearlescent dispersion with good flow properties and a low surfactant content | Alwin Reng, Werner Skrypzak, Walter Kunz | 1986-11-04 |
| 4606916 | Quaternary oxalkylated polyesters, a process for their preparation and their use | Manfred Hofinger, Alwin Reng | 1986-08-19 |
| 4600539 | O/W Emulsifiers for cosmetic purposes | Udo Hoppe, Alwin Reng, Herbert Stuhler, Klaus-Peter Wittern | 1986-07-15 |
| 4589988 | Softener-containing washing agent | Hans-Peter Rieck, Hans-Jurgen Kalz, Adolf May, Hans-Walter Bucking | 1986-05-20 |
| 4588522 | Betaine-amine oxides, a process for their preparation and their use as surfactants | Gunter Blaschke, Alwin Reng | 1986-05-13 |
| 4564520 | Hair shampoos and body cleansing agents having a content of alkylsulfatobetaines | Winfried Ehrl, Alwin Reng | 1986-01-14 |
| 4416808 | Bis-betaine-amine oxides, process for their preparation, and cleaning agents containing them | Gunter Blaschke, Alwin Reng | 1983-11-22 |
| 4415487 | Bis-betaines, a process for their preparation, and cleaning agents containing these compounds | Gunter Blaschke, Alwin Reng | 1983-11-15 |
| 4415488 | Triamine-trioxides, a process for their preparation, and cleaning agents containing these compounds | Gunter Blaschke, Alwin Reng | 1983-11-15 |
| 4237243 | Use of cross-linked polymers to increase the viscosity in cosmetic, pharmaceutical and technical compositions | Alwin Reng, Juliane Balzer, Friedrich Engelhardt, Joachim Ribka | 1980-12-02 |