Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5665135 | Method for fabricating preforms for molded lenses | — | 1997-09-09 |
| 4919699 | Process of removing platinum inclusions from laser glass | Michimasa Matsukawa, Kunio Takeuchi | 1990-04-24 |
| 4892402 | Method for making contact lens hydrophilic | Takeyuki Sawamoto, Koichi Ishida, Niro Tarumi | 1990-01-09 |
| 4871230 | Single mode phosphate laser glass fiber | Toshiharu Yamashita, Sho Amano, Hidemi Tajima, Isao Masuda | 1989-10-03 |
| 4820662 | Silicophosphate laser glass | Michimasa Matsukawa, Chiemi Hata | 1989-04-11 |
| 4816049 | Process of surface treating laser glass | Chiemi Hata, Kouichi Hara | 1989-03-28 |
| 4806138 | Method for melting fluorophosphate glass | Kiyotaka Miura, Toshiharu Yamashita | 1989-02-21 |
| 4778505 | Method of molding glass body | Shinichiro Hirota, Kishio Sugawara | 1988-10-18 |
| 4767435 | Process for producing transparent glass product having refractive index gradient | Shigeaki Omi, Yoshiyuki Asahara, Seiichi Shingaki, Shin Nakayama, Kenji Nakagawa +1 more | 1988-08-30 |
| 4761387 | Fluoride glass | Minoru Tokida, Toshiharu Yamashita, Kiyotaka Miura | 1988-08-02 |
| 4738703 | Method of molding optical lenses | Shinichiro Hirota, Helmuth E. Meissner, Kishio Sugawara | 1988-04-19 |
| 4629489 | Method of manufacturing pressed lenses | Shinichiro Hirota | 1986-12-16 |
| 4625009 | High-hydration contact lens | Niro Tarumi, Shigeo Komiya, Takeyuki Sawamoto | 1986-11-25 |
| 4589118 | Method of optical pumping of erbium-doped laser material and apparatus therefor | Teiichi Suzuki | 1986-05-13 |
| 4549895 | Method and apparatus for melting glass | Toshi Takajoh, Iwao Kinjo | 1985-10-29 |
| 4415464 | Faraday rotation glass | Yoshiyuki Asahara | 1983-11-15 |
| 4363852 | Coated phosphate glass | Yuji Nakajima | 1982-12-14 |
| 4277523 | Method of preventing tarnishing of polished glass articles | Eimei Miyade | 1981-07-07 |
| 4239645 | Phosphate base laser glasses | Michitaka Tsuru | 1980-12-16 |