Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5705663 | Quaternized triethanolamine difatty acid esters | Michael Brock, Meinolf Enneking | 1998-01-06 |
| 5437801 | Aqueous emulsions containing fatty acid esters of N-methyl-N,N,N-trihydroxyethyl ammonium methyl sulfate | Harald Luders, Hauke Steinhardt | 1995-08-01 |
| 4625057 | Process for the production of carboxymethylated alchols, ether alcohols, thioalcohols, or alkyl phenols | Hermann Springmann | 1986-11-25 |
| 4485873 | Process for oil recovery from a subterranean reservoir | Dieter Balzer | 1984-12-04 |
| 4478281 | Process for extracting oil from a subterranean reservoir | Dieter Balzer | 1984-10-23 |
| 4457373 | Process for oil recovery from subterranean deposits by emulsion flooding | Dieter Balzer | 1984-07-03 |
| 4337234 | Method for preparing sodium bicarbonate and hydrogen chloride | Bernhard Hentschel, Jurgen Ziebarth, Alfred Coenen, Ferdinand von Praun | 1982-06-29 |
| 4321247 | Process for preparing sodium bicarbonate and hydrogen chloride | Alfred Coenen, Ferdinand v. Praun, Hans Regner | 1982-03-23 |
| 4320106 | Method for preparing sodium bicarbonate and hydrogen chloride | Bernhard Hentschel, Jurgen Ziebarth, Alfred Coenen, Ferdinand v. Praun | 1982-03-16 |
| 4305917 | Method for preparing ammonia and hydrogen chloride from ammonium chloride | Alfred Coenen, Dieter Balzer | 1981-12-15 |
| 4303544 | Adducts of alcohols and olefin oxides as biodegradable and low-foaming tensides useful in detergents | Ekkehard Wienhoefer | 1981-12-01 |
| 4302349 | Adducts of alcohols and olefin oxides, suitable for reducing the interfacial surface tension of oily phases with respect to water | Ekkehard Wienhoefer | 1981-11-24 |
| 4259309 | Method for obtaining gaseous hydrogen chloride from dilute aqueous hydrochloric acid | Alfred Coenen, Ferdinand von Praun | 1981-03-31 |
| 4255356 | Purification of tertiary amines using an adsorbent | Alfred Coenen, Ferdinand von Praun, Hans Schuller | 1981-03-10 |
| 4254092 | Method for separating hydrogen chloride and hydrogen bromide | Alfred Coenen, Ekkehard Wienhofer | 1981-03-03 |
| 4230681 | Method of manufacturing hydrogen chloride from solutions of amine hydrochlorides | Alfred Coenen, Bernhard Hentschel, Jurgen Ziebarth | 1980-10-28 |