Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5980594 | Use of reaction products of polyolefins and oxides of nitrogen or mixtures of oxides of nitrogen and oxygen as additives for fuels | Rudolf Kropp, Eckhard Hickmann, Klaus Ebel, Hans Peter Rath, Harald Schwahn | 1999-11-09 |
| 5972856 | Reaction products of polyisobutenes and oxides of nitrogen or mixtures of oxides of nitrogen and oxygen and their use as fuel and lubricant additives | Rudolf Kropp, Eckhard Hickmann, Klaus Ebel, Hans Peter Rath, Harald Schwahn | 1999-10-26 |
| 5919275 | Fuel and lubricant additives, their preparation and fuel or lubricant compositions containing these additives | Knut Oppenlander, Jurgen Mohr, Hans-Joachim Muller, Dietmar Posselt | 1999-07-06 |
| 5879420 | Reaction products of polyisobutenes and oxides of nitrogen or mixtures of oxides of nitrogen and oxygen and their use as fuel and lubricant additives | Rudolf Kropp, Eckhard Hickmann, Klaus Ebel, Hans Peter Rath, Harald Schwahn | 1999-03-09 |
| 5876467 | Use of carboxylic esters as fuel additives or lubricant additives and their preparation | Arthur Hohn, Hans-Günter Funke, Knut Oppenlander, Harald Schwahn | 1999-03-02 |
| 5863879 | Dye transfer inhibitors for detergents | Michael Zirnstein, Wolfgang Trieselt, Knut Oppenlander, Claudia Nilz, Michael Kroner | 1999-01-26 |
| 5863519 | Composition and method of MRI using both a positive and a negative contrast agent | Klaes Golman, Goran Pettersson, Arne Berg, Jo Klaveness, Pal Rongved +2 more | 1999-01-26 |
| 5660601 | Polyetheramine-containing fuels for gasoline engines | Knut Oppenlander, Andreas Henne, Volkmar Menger, Rainer Becker, Wolfgang Reif +3 more | 1997-08-26 |
| 5602840 | Program-controlled | Gerhard Magerl | 1997-02-11 |
| 5401492 | Water insoluble non-magnetic manganese particles as magnetic resonance contract enhancement agents | Kenneth Kellar, Piotr H. Karpinski, Elaine Liversidge, Gregory L. McIntire, Barbara Van Orman | 1995-03-28 |
| 5208336 | Selenomerocyanines and processes for preparation and methods of use and compositions thereof | Roger Searle | 1993-05-04 |
| 5053506 | Novel sulfur-containing merocyanine dyes | Frederick J. Sauter | 1991-10-01 |
| 4937344 | Novel sulfur-containing merocyanine dyes | Frederick J. Sauter | 1990-06-26 |
| 4906750 | Sulfoalkyl benzoxazoleinylidene butenylidene thiobarbituric acid derivatives | Frederick J. Sauter | 1990-03-06 |
| 4885366 | Novel selenium-containing merocyanine dyes | Frederick J. Sauter | 1989-12-05 |
| 4874866 | Photographically useful chalcogenazoles, chalcogenazolines, and chalcogenazolinium and chalcogenazolium salts | Ronald E. Leone, Rosemary Przyklek | 1989-10-17 |
| 4861703 | Cyclic dichalcogenide fog inhibiting agents for silver halide photography | Roger Lok, John P. Freeman | 1989-08-29 |
| 4831136 | Oxatellurazolium and oxatellurazinium compounds | Ronald E. Leone, Rosemary Przyklek | 1989-05-16 |
| 4772715 | Isotelluroazolo[1,5-a]tellurazoles and processes for their preparation | Rosemary Przyklek-Elling | 1988-09-20 |
| 4677202 | Quaternized 2,1,4-benzoxatellurazinium and 2,1,4-naphthoxatellurazinium salt derivitives | Rosemary Przyklek-Elling, Roger Lok | 1987-06-30 |
| 4661438 | Quaternized tellurium salt fog inhibiting agents for silver halide photography | Rosemary Przyklek-Elling, Roger Lok | 1987-04-28 |
| 4607000 | Amido substituted divalent chalcogenide fog inhibiting agents for silver halide photography | Roger Lok | 1986-08-19 |
| 4607001 | Divalent chalcogenide fog inhibiting agents for silver halide photography | Roger Lok | 1986-08-19 |
| 4599410 | Oxachalcogenazole dyes and processes for their preparation | — | 1986-07-08 |
| 4581330 | Tellurium salt fog inhibiting agents for silver halide photography | Roger Lok | 1986-04-08 |