Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12246887 | Paper container | Kouya Nakamura, Kazuhide Onomura, Eiichi Asoi | 2025-03-11 |
| 11643239 | Paper container | Kouya Nakamura | 2023-05-09 |
| 8570653 | Polarizing glass and optical isolator | — | 2013-10-29 |
| 8174764 | Polarizing glass and optical isolator | — | 2012-05-08 |
| 8144398 | Polarizing element | Michiyori Miura, Toshiaki Sonehara | 2012-03-27 |
| 8114797 | Polarizing glass containing copper and optical isolator | Sei-ichi Yokoyama | 2012-02-14 |
| 7961394 | Polarizing glass, optical isolator, and method for producing polarizing glass | Michiyori Miura, Seiichi Yokoyama | 2011-06-14 |
| 6777359 | Polarizing glass and preparation method thereof | Toshiharu Yamashita | 2004-08-17 |
| 6074968 | Chalcogenide glass fiber | Shozo Morimoto, Toshiharu Yamashita | 2000-06-13 |
| 5958103 | Process for producing preform for glass fiber and process for producing glass fiber | Shozo Morimoto, Toshiharu Yamashita | 1999-09-28 |
| 5125944 | Process for producing buried wave guide device | Yoshiyuki Asahara, Shigeaki Ohmi, Hiroyuki Sakai | 1992-06-30 |
| 5078772 | Process for producing buried waveguide device | Yoshiyuki Asahara, Shigeaki Ohmi, Hiroyuki Sakai | 1992-01-07 |
| 4902330 | Method of producing gradient-index lens | Hiroyuki Sakai, Yoshiyuki Asahara, Shigeaki Omi, Shin Nakayama | 1990-02-20 |
| 4851024 | Process for producing optical glass | Hiroyuki Sakai, Shigeaki Ohmi, Yoshiyuki Asahara | 1989-07-25 |
| 4844724 | Method of adjusting refractive index distribution lenses | Hiroyuki Sakai, Yoshiyuki Asahara, Shigeaki Omi, Shin Nakayama | 1989-07-04 |
| 4805997 | Gradient refractive index type anamorphic planar microlens and method of producing the same | Yoshiyuki Asahara, Shigeaki Omi, Hiroyuki Sakai, Shin Nakayama | 1989-02-21 |