Issued Patents All Time
Showing 76–100 of 137 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4939272 | Water soluble complexes of polyvinylpyrrolidone, hydrogen chloride and iodine and process for making the same | John J. Merianos | 1990-07-03 |
| 4933463 | Polymerizable pyrrolidonyl oxazoline monomers, homopolymers and copolymers | Gary Dandreaux, John J. Merianos, Paul Garelick, Krystyna Plochocka, Max Negrin +1 more | 1990-06-12 |
| 4927667 | Aqueous process for preparing water-resistant coatings of hydrophobic copolymers made from hydrophilic monomers | Jenn S. Shih, Terry E. Smith | 1990-05-22 |
| 4924006 | N-pyrrolidonyl alkyl amino 1,3,4-butanetriol compounds | Lowell R. Anderson, Mohamed M. Hashem | 1990-05-08 |
| 4918198 | N-(pyrrolidonyalkyl)-N-acyl taurine surfactants | Lowell R. Anderson, Mohamed M. Hashem | 1990-04-17 |
| 4900809 | Process of rendering copolymers of maleic anhydride and alkyl vinyl ethers prepared in benzene solvent substantially benzene-free | Mohammed Tazi, Nikhil Kundel | 1990-02-13 |
| 4886890 | Diquarternary nitrogen compounds | Ratan K. Chaudhuri, David J. Tracy | 1989-12-12 |
| 4885158 | Heat stable quaternized lactams having oxylated sulfur anions | David J. Tracy, Thomas Rizzo | 1989-12-05 |
| 4883655 | Quaternized nitrogen containing polycyclic compounds | Ratan K. Chaudhuri, David J. Tracy, Michael W. Helioff | 1989-11-28 |
| 4871535 | Compositions used in permanent structure altering of hair | Michael W. Helioff, Carmen D. Bires | 1989-10-03 |
| 4842858 | Polymeric halophors | David J. Tracy, Mohamed M. Hashem | 1989-06-27 |
| 4837013 | Quaternized nitrogen containing compounds | Ratan K. Chaudhuri, David J. Tracy, Michael W. Helioff | 1989-06-06 |
| 4834767 | Compositions used in permanent alteration of hair color | Michael W. Helioff, Carmen D. Bires | 1989-05-30 |
| 4834970 | Cosometic compositions containing quaternized nitrogen containing compound | Ratan K. Chaudhuri, David J. Tracy, Michael W. Helioff | 1989-05-30 |
| 4830851 | Polymeric halophors | David J. Tracy, Mohamed M. Hashem | 1989-05-16 |
| 4830850 | Quaternized nitrogen containing compounds | Ratan K. Chaudhuri, David J. Tracy, Michael W. Helioff | 1989-05-16 |
| 4812263 | Bis-quaternary ammonium compounds | — | 1989-03-14 |
| 4808569 | Fragrance additive | Ratan K. Chaudhuri, Michael W. Helioff | 1989-02-28 |
| 4801400 | Epoxy pyrrolidone based non-ionic surfactants | Mohamed M. Hashem, David J. Tracy | 1989-01-31 |
| 4793994 | Compositions used in permanent structure altering of hair | Michael W. Helioff, Carmen D. Bires | 1988-12-27 |
| 4792400 | Insoluble vinyl lactam clarifiers | James A. Dougherty, Harold O. Locke, Fulvio J. Vara, Terry E. Smith | 1988-12-20 |
| 4775527 | Compositions used in permanent alteration of hair color | Carmen D. Bires, Michael W. Helioff | 1988-10-04 |
| 4764306 | Process for the manufacture of bis-quaternary ammonium compounds | — | 1988-08-16 |
| 4734277 | Bis-quaternary ammonium compounds | — | 1988-03-29 |
| 4732990 | Quaternized nitrogen containing compounds | Ratan K. Chaudhuri, David J. Tracy, Michael W. Helioff | 1988-03-22 |