Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6426091 | Sustained-release theophylline tablet | Mutsuo Okumura, Minoru Kamakura | 2002-07-30 |
| 6007746 | Method for manufacturing preforms used in molding optical elements and method for manufacturing and molding optical elements | Jun Murata, Toshiaki Takano | 1999-12-28 |
| 5965069 | Method for making optical preforms and optical elements by press | Jun Murata, Takahisa Kondou, Toshiaki Takano, Chizuo Izumino, Shoji Nakamura | 1999-10-12 |
| 5718850 | Method and device for manufacturing optical elements | Toshiaki Takano, Jun Murata, Shoji Nakamura, Takahisa Kondou | 1998-02-17 |
| 5322541 | Method of producing glass blank | Yoshiyuki Shimizu, Shoji Nakamura, Tadayoshi Yonemoto, Tadao Shioyama, Noriyuki Kawata | 1994-06-21 |
| 5201927 | Method of producing the optical element | Shoji Nakamura, Takasi Inoue, Tadao Shioyama | 1993-04-13 |
| 5188652 | Machine for molding optical element | Shoji Nakamura, Takasi Inoue, Tadao Shioyama | 1993-02-23 |
| 5171348 | Die for press-molding optical element | Makoto Umetani, Hideto Monji, Jun Murata, Toshiaki Takano, Yoshinori Shirafuzi +2 more | 1992-12-15 |
| 5160361 | Method of manufacturing optical element | Jun Murata, Takayuki Kimoto | 1992-11-03 |
| 5120343 | Apparatus for producing optical glass element | Hideto Monji, Kiyoshi Kuribayashi, Tadayoshi Yonemoto, Noriyuki Kawata, Tadao Shioyama +1 more | 1992-06-09 |
| 5087279 | Method of producing optical glass element and production apparatus using this method | Hideto Monji, Kiyoshi Kuribayashi, Tadayoshi Yonemoto, Noriyuki Kawata, Tadao Shioyama +1 more | 1992-02-11 |
| 5032160 | Method of press molding lens material | Jun Murata, Takayuki Kimoto | 1991-07-16 |
| 5015280 | Mold for molding optical elements | Takayuki Kimoto, Takashi Inoue, Shoji Nakamura, Daijirou Yonetani | 1991-05-14 |
| 4927247 | Objective lens for optical disk system and optical head using the same | Yasuhiro Tanaka, Yasuo Nakajima, Shinichi Tanaka | 1990-05-22 |
| 4849151 | Method of molding plastic and injection compression molding apparatus using elongatable tie bars | Toru Tamura, Akio Ito, Yoshio Nakatani | 1989-07-18 |
| 4701770 | Substrate for an optical disc | Akio Ito, Hideaki Mochizuki, Tooru Tamura | 1987-10-20 |
| 4583102 | Optical disc and method of manufacturing | Tooru Tamura, Kensuke Kuchiba, Akio Itoh, Shunsuke Matsuda | 1986-04-15 |
| 4427353 | Upright injection-compression pressing machine for the manufacture of information carrier discs | Shoji Omiya, Tokihalu Nakagawa, Seiji Inagaki, Junnosuke Yamawaki, Nobuyuki Nakamura +1 more | 1984-01-24 |