Issued Patents All Time
Showing 1–25 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7683039 | Water soluble, randomly substituted partial N-, partial O-acetylated chitosan, preserving compositions containing chitosan, and processes for making thereof | Katrina Bergbauer, Kai C. Su, Guigui Wang | 2010-03-23 |
| 7125967 | Water-soluble chitosan having low endotoxin concentration and methods for making and using the same | Katrina Bergbauer, Kai C. Su, Guigui Wang, Sherry Wages | 2006-10-24 |
| 6716970 | Water soluble, randomly substituted partial N-partial O-acetylated chitosan, preserving compositions containing chitosan, and processes for making thereof | Katrina Bergbauer, Kai C. Su, Guigui Wang | 2004-04-06 |
| 6462884 | Polymerizable composition and optical articles using the same | Guigui Wang | 2002-10-08 |
| 5500024 | Ultraviolet absorbing lenses and methods of manufacture thereof | Kai C. Su | 1996-03-19 |
| 5491262 | Bis{[1-(2-A-2-B)ethenyl]}[2-R.sup.2 -4-X-phenyl-or 1-(2-R.sup.2 -4-X-phenyl)ethenyl]methanes | — | 1996-02-13 |
| 5431879 | Method and container for sterilizing and disinfecting | Barbara L. Heyl, Lynn Cook Winterton, Kai C. Su, Jack C. White | 1995-07-11 |
| 5399692 | Ultraviolet absorbing benzophenone sulfonic acid derivatives | Kai C. Su | 1995-03-21 |
| 5352245 | Process for tinting contact lens | Kai C. Su | 1994-10-04 |
| 5298033 | Ultraviolet absorbing lenses and methods of manufacturing thereof | Kai C. Su | 1994-03-29 |
| 5098445 | Ultraviolet radiation absorbing agent for bonding to an ocular lens | Kai C. Su | 1992-03-24 |
| 5021068 | Tinted contact lens and method of manufacture thereof: reactive dye and quaternary phosphonium salt | Kai C. Su | 1991-06-04 |
| 4963160 | Reactive uv absorbing compositions and method of preparing lenses therefrom | Kai C. Su | 1990-10-16 |
| 4954132 | Tinted contact lens and method of tinting with reactive dye and quaternary ammonium salt | Kai C. Su | 1990-09-04 |
| 4929250 | Ultraviolet absorbing lenses and method of making the same | Kai C. Su | 1990-05-29 |
| 4895958 | 3-aminophenyl-3-(phenylsulfonyl)-1,1-bis(aminophenyl/indol-3-yl) propenes | James E. Kassner | 1990-01-23 |
| 4870050 | Novel compounds, processes and marking systems | — | 1989-09-26 |
| 4795736 | Novel compounds, process and marking systems | James E. Kassner | 1989-01-03 |
| 4788285 | Indole-phthalide derivatives | Angelique M. Black | 1988-11-29 |
| 4736027 | Indole-phthalide derivatives | Angelique M. Black | 1988-04-05 |
| 4697018 | 9-julolidinyl derivatives and process of preparing them | Paul Schmidt | 1987-09-29 |
| 4688059 | Marking systems | Paul Schmidt | 1987-08-18 |
| 4661605 | 3-(ether and thioether)-3-(indolyl)-phthalides | Paul Schmidt | 1987-04-28 |
| 4660060 | Imaging systems containing 3-(indol-3-yl)-3-(4-substituted aminophenyl)phthalides | Angelique M. Black | 1987-04-21 |
| 4652643 | 3-amido-7-disubstituted amino-10-carbonylphenothiazines | Michael B. Gunn | 1987-03-24 |