Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5125944 | Process for producing buried wave guide device | Shigeaki Ohmi, Hiroyuki Sakai, Yoshitaka Yoneda | 1992-06-30 |
| 5122178 | Process for producing glass doped with dispersed microcrystallites | Shigeaki Omi, Shuji Yoshida | 1992-06-16 |
| 5078772 | Process for producing buried waveguide device | Shigeaki Ohmi, Hiroyuki Sakai, Yoshitaka Yoneda | 1992-01-07 |
| 5043003 | Process for producing glass doped with dispersed mirocrystallites | Shigeaki Omi, Shuji Yoshida | 1991-08-27 |
| 4902330 | Method of producing gradient-index lens | Hiroyuki Sakai, Shigeaki Omi, Shin Nakayama, Yoshitaka Yoneda | 1990-02-20 |
| 4851024 | Process for producing optical glass | Hiroyuki Sakai, Shigeaki Ohmi, Yoshitaka Yoneda | 1989-07-25 |
| 4844724 | Method of adjusting refractive index distribution lenses | Hiroyuki Sakai, Shigeaki Omi, Shin Nakayama, Yoshitaka Yoneda | 1989-07-04 |
| 4844589 | Lenses having plural contiguous refractive index distribution substrates and method of manufacture | Hiroyuki Sasai, Shigeaki Omi, Seiichi Shingaki, Shin Nakayama | 1989-07-04 |
| 4805997 | Gradient refractive index type anamorphic planar microlens and method of producing the same | Shigeaki Omi, Hiroyuki Sakai, Shin Nakayama, Yoshitaka Yoneda | 1989-02-21 |
| 4767435 | Process for producing transparent glass product having refractive index gradient | Shigeaki Omi, Seiichi Shingaki, Shin Nakayama, Kenji Nakagawa, Tetsuro Izumitani +1 more | 1988-08-30 |
| 4640699 | Process for producing glass product having gradient of refractive index | Shigeaki Ohmi, Seiichi Shingaki, Hiroyuki Sakai | 1987-02-03 |
| 4563205 | Process for the production of slab-shaped lens having gradient of refractive index in thickness direction only | Hiroshi Sakai, Seiichi Shingaki, Shigeaki Ohmi | 1986-01-07 |
| 4525189 | Process for producing glass product having gradient of refractive index | Shigeaki Ohmi, Seiichi Shingaki, Hiroyuki Sakai | 1985-06-25 |
| 4415464 | Faraday rotation glass | Tetsuro Izumitani | 1983-11-15 |