| 8278238 |
Triplet emitter having condensed five-membered rings |
Hans-Hermann Johannes, Wolfgang Kowalsky, Sven Ammermann, Ute Jana Weinaug |
2012-10-02 |
| 5662781 |
Elimination of nitrile impurities from polymers |
Walter Denzinger, Heinrich Hartmann, Claudia Nilz |
1997-09-02 |
| 5630907 |
Use of hydrolyzed copolymers of N-vinylcarboxamides and monoethylenically unsaturated carboxylic acids in papermaking |
Claudia Nilz, Walter Denzinger, Heinrich Hartmann, Friedrich Linhart, Rudolf Schuhmacher +2 more |
1997-05-20 |
| 5599898 |
Insoluble, only slightly swellable polymers containing amino groups, their preparation and their use |
Heinrich Hartmann, Walter Denzinger, Claudia Nilz |
1997-02-04 |
| 5578678 |
Graft polymers of natural substances containing saccharide structures or derivatives thereof and ethylenically unsaturated compounds and their use |
Heinrich Hartmann, Walter Denzinger, Claudia Nilz, Friedrich Linhart, Andreas Stange |
1996-11-26 |
| 5554718 |
Catonic urea/formaldehyde resins, their preparation and their use in the paper industry |
Klaus Flory, Andreas Stange, Norbert Sendhoff |
1996-09-10 |
| 5543459 |
Graft polymers of natural substances containing saccharide structures or derivatives thereof and ethylenically unsaturated compounds and their use |
Heinrich Hartmann, Walter Denzinger, Claudia Nilz, Friedrich Linhart, Andreas Stange |
1996-08-06 |
| 5478656 |
Cationic urea/formaldehyde resins, their preparation and their use in the paper industry |
Klaus Flory, Andreas Stange, Norbert Sendhoff |
1995-12-26 |
| 5359082 |
Preparation of 4-substituted imidazoles from N-formyl-.alpha.-aminonitrile |
Ulrich Koehler, Thomas-Michael Kahl, Horst Neuhauser, Hardo Siegel |
1994-10-25 |
| 5334287 |
Graft polymers of natural substances containing saccharide structures or derivatives thereof and ethylenically unsaturated compounds and their use |
Heinrich Hartmann, Walter Denzinger, Claudia Nilz, Friedrich Linhart, Andreas Stange |
1994-08-02 |
| 5326909 |
Stabilization of monomeric N-vinylformamide |
Jacques Dupuis |
1994-07-05 |
| 5290880 |
Preparation of finely divided, water-soluble polymers containing vinylamine units |
Dietmar Moench, Enrique Freudenberg, Heinrich Hartmann, Norbert Sendhoff |
1994-03-01 |
| 5155270 |
Anionically polymerized N-vinylformamide and the preparation thereof |
Rolf Fikentscher |
1992-10-13 |
| 5145559 |
Production of paper, board and cardboard |
Werner Auhorn, Friedrich Linhart, Primoz Lorencak, Norbert Sendhoff, Walter Denzinger +1 more |
1992-09-08 |
| 5126395 |
Preparation of stable water-in-oil emulsions of hydrolyzed polymers of N-vinylamides |
Lutz End, Walter Denzinger, Norbert Sendhoff, Enrique Freudenberg, Friedrich Linhart +2 more |
1992-06-30 |
| 5098521 |
Production of paper, board and cardboard from paper stocks containing foreign materials |
Enrique Freudenberg, Friedrich Linhart, Rainer Tresch, Heinrich Hartmann, Walter Denzinger +1 more |
1992-03-24 |
| 5077427 |
Preparation of alpha-formylamino nitriles |
Rolf Fikentscher |
1991-12-31 |
| 5077426 |
Preparation of alpha-formylamino nitriles |
Rolf Fikentscher |
1991-12-31 |
| 5008321 |
Preparation of stable water-in-oil emulsions of hydrolyzed polymers of N-vinylamides and their use |
Heinrich Hartmann, Walter Denzinger, Norbert Sendhoff, Enrique Freudenberg |
1991-04-16 |
| 4978427 |
Water-soluble copolymers containing vinylamine units as wet strength and dry strength agent for paper |
Sigberg Pfohl, Heinrich Hartmann, Walter Denzinger |
1990-12-18 |
| 4940514 |
Making paper, board and cardboard of high dry strength |
Andreas Stange, Hans-Juergen Degen, Werner Auhorn, Volkmar Weberndoerfer, Heinrich Hartmann |
1990-07-10 |
| 4880497 |
Preparation of water-soluble copolymers containing vinylamine units, and their use as wet strength agents and dry strength agents for paper |
Sigberg Pfohl, Heinrich Hartmann, Walter Denzinger |
1989-11-14 |
| 4859642 |
Fixed-bed catalyst structure obtained using honeycomb elements |
Wolfgang Hoelderich, Peter Kroetzsch, Werner Biffar |
1989-08-22 |
| 4818341 |
Production of paper and paperboard of high dry strength |
Hans-Juergen Degen, Sigberg Pfohl, Volkmar Weberndoerfer, Gerd Rehmer, Andreas Stange |
1989-04-04 |
| 4814505 |
Purification of n-vinylformamide |
Willi Schmidt, Alfred Oftring, Theo Proll, Heinrich Hartmann |
1989-03-21 |
