Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5835245 | Holographic method and materials to detect and prevent forgery in identity cards | ERIC CHESAK | 1998-11-10 |
| 5508145 | Infrared imaging materials | — | 1996-04-16 |
| 5472786 | Variable index material for optical switching and real time holographic recording | Keith H. Pannell | 1995-12-05 |
| 5436167 | Fiber optics gas sensor | — | 1995-07-25 |
| 5434032 | Infrared imaging methods and systems | — | 1995-07-18 |
| 5364739 | Nonsilver x-ray recording process | — | 1994-11-15 |
| RE33914 | Infrared imaging system and method | — | 1992-05-05 |
| 5098806 | Photosensitive elements based on polymeric matrices of diacetylenes and spiropyrans and the use thereof as coatings to prevent document reproduction | — | 1992-03-24 |
| 5053320 | Direct dry negative color printing process and composition | — | 1991-10-01 |
| 4975584 | Method and apparatus for collecting, processing and displaying ultraviolet radiation data | Thomas L. Benjamin | 1990-12-04 |
| 4905202 | Detection panel and method for acoustic holography | — | 1990-02-27 |
| 4770738 | Electro hydrodynamic method for the preparation of a thin semiconductor film | — | 1988-09-13 |
| 4751387 | Infrared imaging system and method | — | 1988-06-14 |
| 4737781 | Process for displaying information | — | 1988-04-12 |
| 4725527 | Photosensitive compositions for direct positive color photography | — | 1988-02-16 |
| 4705046 | Device for the qualitative measurement of uv radiation received by the skin | — | 1987-11-10 |
| 4699872 | Non-silver photosensitive article and process | — | 1987-10-13 |
| 4434025 | Controlling crystallinity and thickness of monocrystalline layer by use of an elliptically polarized beam of light | — | 1984-02-28 |
| 4395472 | Plain paper reproduction process | — | 1983-07-26 |
| 4394439 | Non-silver X-ray recording process | — | 1983-07-19 |
| 4361108 | Image-transferring sheet | John D. Angleman | 1982-11-30 |
| 4361645 | Color photography element with induced spectrosensitization | — | 1982-11-30 |
| 4335302 | Bar code scanner using non-coherent light source | — | 1982-06-15 |
| 4320193 | Photographic emulsions having special chromatic effects | — | 1982-03-16 |
| 4268600 | Process for photochemically coloring textiles using photosensitive triazene and coupler therefor | Claude R. Riou | 1981-05-19 |