Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6709802 | Methods and apparatus for rendering an optically encoded medium unreadable | Nabil Lawandy, Charles M. Zepp | 2004-03-23 |
| 6338933 | Methods and apparatus for rendering an optically encoded medium unreadable | Nabil Lawandy, Charles M. Zepp | 2002-01-15 |
| 5422382 | Substituted xanthene compounds | Louis Locatell, Jr., F. Donald Roberts, Charles M. Zepp | 1995-06-06 |
| 5326502 | Pyridylbenzimidazole compositions for absorbing ultraviolet light | George Richard Bird, Louis Locatell, Jr., Louis M. Scarmoutzos | 1994-07-05 |
| 5149830 | Substituted xanthene compounds | Louis Locatell, Jr., F. Donald Roberts, Charles M. Zepp | 1992-09-22 |
| 4597891 | Liquid crystal compositions and devices and novel compounds | Howard G. Rogers, Russell Gaudiana, Cynthia McGowan, Ronald J. Sahatjian | 1986-07-01 |
| 4463082 | Silver diffusion transfer film unit with noble metal compound as stabilizer | John H. Ferguson, Stephen R. Sofen | 1984-07-31 |
| 4193847 | Method of electrodeposition | Stanley M. Bloom, Arnold Hoffman | 1980-03-18 |
| 4185144 | Electrochemical cell with a cadmium patch electrode | Allan E. Ames, Stanley M. Bloom, Arnold Hoffman | 1980-01-22 |