Issued Patents All Time
Showing 51–75 of 93 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5084535 | Preparation of pulverulent polymers of acrylic and/or methacrylic acid and use thereof | Karl Hennig, Heinrich Hartmann, Hans-Juergen Raubenheimer, Hermann Fischer | 1992-01-28 |
| 5073269 | Preparation of water-soluble copolymers of maleic acid and use thereof as water treatment agents | Heinrich Hartmann, Ulrich Goeckel, Felix Richter, Hans-Juergen Raubenheimer, Ekhard Winkler | 1991-12-17 |
| 5026494 | Amino group-containing graft polymer, and its use as a dispersing viscosity index improver | Helmut Mach, Juergen Mohr, Knut Oppenlaender, Roland Schwen, Hans-Henning Vogel | 1991-06-25 |
| 5009805 | Liquid detergent with copolymer additive | Johannes Perner, Paul Diessel, Heinrich Hartmann, Alfred Oftring, Willibald Schoenleben | 1991-04-23 |
| 5009670 | Fuels for gasoline engines | Franz-Dieter Martischius, Hans-Henning Vogel, Norbert Greif, Knut Oppenlaender, Heinrich Hartmann | 1991-04-23 |
| 5008321 | Preparation of stable water-in-oil emulsions of hydrolyzed polymers of N-vinylamides and their use | Heinrich Hartmann, Michael Kroener, Norbert Sendhoff, Enrique Freudenberg | 1991-04-16 |
| 5008032 | Use of partially esterified copolymers in liquid detergents | Paul Diessel, Johannes Perner, Heinrich Hartmann, Hans-Juergen Raubenheimer | 1991-04-16 |
| 4978427 | Water-soluble copolymers containing vinylamine units as wet strength and dry strength agent for paper | Sigberg Pfohl, Michael Kroener, Heinrich Hartmann | 1990-12-18 |
| 4959077 | Fuels for gasoline engines | Franz-Dieter Martischius, Hans Peter Rath, Hans-Henning Vogel, Norbert Greif, Knut Oppenlaender +1 more | 1990-09-25 |
| 4956421 | Preparation of oxyalkylated, carboxyl-containing polymers | Heinrich Hartmann, Richard Baur, Johannes Perner, Wolfgang Trieselt, Horst Trapp +1 more | 1990-09-11 |
| 4952558 | Preparation of copolymers of ethylenically unsaturated dicarboxylic anhydrides and alkyl vinyl ethers | Hans-Helmut Goertz, Hans-Juergen Raubenheimer | 1990-08-28 |
| 4929690 | Preparation of metal salts of carboxyl-containing polymers | Hans-Helmut Goertz, Hans-Juergen Raubenheimer | 1990-05-29 |
| 4914167 | Polymeric organic acids, their preparation and their use in detergents and cleansers | Juergen Hambrecht, Heinrich Hartmann, Albert Hettche, Wolfgang Trieselt, Rolf Schneider | 1990-04-03 |
| 4886859 | Slightly crosslinked, water-soluble polymaleic acid, its preparation and its use | Heinrich Hartmann, Ulrich Gockel, Felix Richter, Hans-Jurgen Raubenheimer, Ekhard Winkler | 1989-12-12 |
| 4880497 | Preparation of water-soluble copolymers containing vinylamine units, and their use as wet strength agents and dry strength agents for paper | Sigberg Pfohl, Michael Kroener, Heinrich Hartmann | 1989-11-14 |
| 4818794 | Slightly crosslinked, water-soluble polymaleic acid, its preparation and its use | Heinrich Hartmann, Ulrich Goeckel, Felix Richter, Hans-Juergen Raubenheimer, Ekhard Winkler | 1989-04-04 |
| 4818795 | Polymaleic acid, its preparation and its use | Heinrich Hartmann, Ulrich Goeckel, Felix Richter, Ekhard Winkler, Hans-Juergen Raubenheimer | 1989-04-04 |
| 4816534 | Preparation of vinylpyrrolidone polymers | Adolf Nuber, Axel Sanner | 1989-03-28 |
| 4814102 | Detergents containing oxyalkylated, carboxyl-containing polymers | Richard Baur, Albrecht Eckell, Heinrich Hartmann, Josef Mueller, Hans-Juergen Raubenheimer +1 more | 1989-03-21 |
| 4774285 | Preparation of water-soluble copolymers containing vinylamine units, and their use as wet strength agents and dry strength agents for paper | Sigberg Pfohl, Michael Kroener, Heinrich Hartmann | 1988-09-27 |
| 4774303 | Preparation of polymers of acrylic acid or metharcylic acid | Heinrich Hartmann, Guenter Hirsch, Hans-Werner Becker, Michael Rohmann | 1988-09-27 |
| 4748220 | Preparation of finely divided pulverulent crosslinked copolymers | Heinrich Hartmann | 1988-05-31 |
| 4725655 | Preparation of copolymers of monoethylenically unsaturated mono- and dicarboxylic acids and anhydrides | Heinrich Hartmann, Wolfgang Trieselt, Albert Hettche, Rolf Schneider, Hans-Juergen Raubenheimer | 1988-02-16 |
| 4702858 | Washing agents containing, as additives, carboxyl-containing copolymers which are neutralized or amidated with amines | Heinrich Hartmann, Wolfgang Trieselt, Erhard Klahr, Albert Hettche | 1987-10-27 |
| 4698174 | Additives for detergents and cleaning agents | Heinrich Hartmann, Wolfgang Trieselt, Albert Hettche, Rolf Schneider, Hans-Juergen Raubenheimer | 1987-10-06 |