Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7365896 | Photochromic device | Takuo Mochizuka | 2008-04-29 |
| 6989060 | Calcium fluoride crystal and method and apparatus for using the same | — | 2006-01-24 |
| 6522464 | Diffraction optical element, optical system and optical device | Masaaki Nakabayashi | 2003-02-18 |
| 5662999 | Mold and method of manufacturing the same | Yasushi Taniguchi, Masaaki Yokota | 1997-09-02 |
| 5589882 | Integral infrared absorbing optical low-pass filter | Akihiko Shiraishi, Kazuo Fujibayashi | 1996-12-31 |
| 5575961 | Roll-shaped mold for information recording medium | Osamu Takamatsu | 1996-11-19 |
| 5192352 | Molding method using glass blank | Shuji Murakami | 1993-03-09 |
| 5168404 | Optical element and glass blank for producing the optical element | Sunao Miyazaki, Nobukazu Yogo | 1992-12-01 |
| 5160362 | Process for manufacturing optical element | Kiyoshi Yamamoto, Isamu Shigyo, Masaki Ohmori, Fumitaka Yoshimura | 1992-11-03 |
| 5032159 | Method of manufacturing optical device | Kiyoshi Yamamoto, Masaaki Yokota | 1991-07-16 |
| 4483899 | Infrared reflection-preventing film | — | 1984-11-20 |