Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5334691 | Hydrophilic polyurethanes of improved strength | Christian W. Johnston | 1994-08-02 |
| 5273742 | Biomedical water soluble hydrophilic polyurethane polymers and method of use thereof | Murray H. Reich | 1993-12-28 |
| 5120816 | Hydrophilic polyurethanes of improved strength | Christian W. Johnston | 1992-06-09 |
| 5000955 | Thermally reversible polyurethane hydrogels and cosmetic, biological and medical uses | Christian W. Johnston, George E. Seems | 1991-03-19 |
| 4810582 | Hydrophilic polyurethane composition | Ellen K. Morgan, Stephen D. Reduker | 1989-03-07 |
| 4810543 | Articles having low friction surfaces and production thereof | Charles K. Kliment, George E. Seems | 1989-03-07 |
| 4798876 | Hydrophilic polyurethane composition | Ellen K. Morgan, Stephen D. Reduker | 1989-01-17 |
| 4780512 | Polyurethane acrylate compositions | Christian W. Johnston | 1988-10-25 |
| 4496535 | Polyurethane polyene compositions | Christian W. Johnston | 1985-01-29 |
| 4490423 | Polyurethane polyene compositions | Christian W. Johnston | 1984-12-25 |
| 4454309 | Polyurethane polyene compositions | Christian W. Johnston | 1984-06-12 |
| 4451635 | Polyurethane quaternary ammonium salts | Christian W. Johnston | 1984-05-29 |
| 4439583 | Polyurethane diacrylate compositions useful in forming canulae | Christian W. Johnston | 1984-03-27 |
| 4439584 | Gas and ion permeable membranes formed of polyurethane diacrylate compositions | Christian W. Johnston | 1984-03-27 |
| 4439585 | Polyurethane diacrylate compositions as carrier for pharmacological agents | Christian W. Johnston | 1984-03-27 |
| 4424305 | Surgical implants formed of polyurethane diacrylate compositions | Christian W. Johnston | 1984-01-03 |
| 4408023 | Polyurethane diacrylate compositions useful for contact lenses and the like | Christian W. Johnston | 1983-10-04 |
| 4359558 | Polyurethane diacrylate compositions | Christian W. Johnston | 1982-11-16 |
| 4255550 | Polyurethane polymers characterized by carboxylate groups and hydroxyl groups in the polymer backbone | — | 1981-03-10 |