Issued Patents All Time
Showing 201–216 of 216 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4268605 | Stabilization of organic substrate materials including photographic dye images against the action of light | Hiroshi Hara, Kotaro Nakamura | 1981-05-19 |
| 4268617 | Color photographic light-sensitive material | Akio Mitsui | 1981-05-19 |
| 4258129 | Thermally developable light sensitive material using trivalent and tetravalent cerium compounds | Shinpei Ikenoue, Takao Masuda | 1981-03-24 |
| 4256817 | Method of stabilizing organic substrate materials including photographic dye images to light and a photographic material so stabilized | Hiroshi Hara, Kotaro Nakamura | 1981-03-17 |
| 4254195 | Stabilization of organic substrate materials including photographic dye images against the action of light | Hiroshi Hara, Kotaro Nakamura | 1981-03-03 |
| 4248949 | Method for stabilizing organic substrate materials including photographic dye images against the action of light and a photographic material so stabilized | Hiroshi Hara, Kotaro Nakamura | 1981-02-03 |
| 4246329 | Method for improving the light fastness of organic substrate materials including photographic dye images | Hiroshi Hara, Kotaro Nakamura | 1981-01-20 |
| 4246330 | Stabilization of organic substrate materials including photographic dye images against the action of light | Hiroshi Hara, Kotaro Nakamura | 1981-01-20 |
| 4245018 | Method for stabilizing organic substrate materials including photographic dye images to light and a color diffusion transfer material | Hiroshi Hara, Kotaro Nakamura | 1981-01-13 |
| 4242429 | Method of stabilizing organic substrate materials against light | Hiroshi Hara | 1980-12-30 |
| 4242430 | Method for stabilizing organic substrate materials including photographic dye images against light | Hiroshi Hara, Kotaro Nakamura | 1980-12-30 |
| 4242431 | Method for stabilizing organic substrate materials including photographic dye images to light and a photographic material so stabilized | Hiroshi Hara, Kotaro Nakamura | 1980-12-30 |
| 4241155 | Method for stabilizing organic substrates including photographic dye images against light | Hiroshi Hara, Kotaro Nakamura, Shigeru Oono | 1980-12-23 |
| 4241154 | Method of stabilizing organic substrates against the action of light | Hiroshi Hara | 1980-12-23 |
| 4239843 | Method of stabilizing organic substrates against the action of light | Hiroshi Hara | 1980-12-16 |
| 4234917 | Commutation failure detection and restoration for SCR frequency converters | Junichi Nakakuki, Takumi Mizukawa, Yoshio Ogino | 1980-11-18 |