Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8536398 | Method for purifying supply flows containing aromates by means of zeolites | Rolf Henn, Ulrich Müller, Jürgen Dosch | 2013-09-17 |
| 4908413 | Preparation of copolymers of monoalkyl maleates and vinyl alkyl ethers | Hans-Helmut Goertz, Friedrich Vogel, Franz Frosch, Paul Naegele, Hans-Juergen Raubenheimer | 1990-03-13 |
| 4841066 | Preparation of 3-methyl-1-vinylimidazolium chlorides | Hans-Helmut Goertz, Axel Sanner, Albrecht Kolb, Hans-Juergen Raubenheimer, Friedrich Vogel | 1989-06-20 |
| 4767613 | Terpolymers, their use in hair treatment agents and hair treatment agents containing these terpolymers | Adolf Nuber, Axel Sanner, Friedrich Vogel | 1988-08-30 |
| 4595737 | Water-soluble terpolymers and their preparation | Oral Aydin, Wolfgang Linke, Gerd Schroeder, Peter Fickeisen | 1986-06-17 |
| 4551512 | Water-soluble polymers having a low hygroscopicity | Axel Sanner, Karl Seib, Siegfried Lang | 1985-11-05 |
| 4433112 | Preparation of a polyvinylpyrrolidone by heat treatment of an aqueous solution of a conventional polyvinylpyrrolidone | Heinrich Hartmann, Paul Naegele, Karl Seib | 1984-02-21 |
| 4350791 | Vinylpyrrolidone polymers, their preparation, their use in the preparation of plasma substitutes, and the substitutes thus obtained | Siegfried Lang, Eckhard Roske | 1982-09-21 |
| 4345049 | Preparation of polyvinylpyrrolidone-iodine | Walter Denzinger, Heinrich Hartmann | 1982-08-17 |
| 4330451 | Preparation of a polyvinylpyrrolidone by heat treatment of an aqueous solution of a conventional polyvinylpyrrolidone | Heinrich Hartmann, Paul Naegele, Karl Seib | 1982-05-18 |
| 4277576 | Preparation of modified polymers of N-vinylpyrrolid-2-one and their use for the preparation of polymers interrupted by bridge members | Herbert Spoor, Claus Cordes | 1981-07-07 |
| 4254239 | Biodegradable vinylpyrrolidone polymers, their manufacture and use | Hans-Uwe Schenck, Siegfried Lang, Egon Brode | 1981-03-03 |
| 4229551 | Preparation of modified polymers of N-vinylpyrrolid-2-one and their use for the preparation of polymers interrupted by bridge members | Herbert Spoor, Claus Cordes | 1980-10-21 |
| 4182851 | Process for reducing the residual monomer content in the polymerization of vinyl-lactams and vinyl esters | Herbert Spoor, Hans-Uwe Schenck, Wolfgang Schwarz | 1980-01-08 |