Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8988775 | Polarizing element and process for producing polarizing element | — | 2015-03-24 |
| 8479539 | Optical glass, glass material for press molding, optical element, and method of manufacturing same | Yoshiko Kasuga, Kazuo Tachiwana | 2013-07-09 |
| 7897976 | Light-emitting device of field-effect transistor type | Hiroshi Kawazoe, Satoshi Kobayashi, Yuki Tani | 2011-03-01 |
| 7880377 | Quantum dot-dispersed light emitting device, and manufacturing method thereof | Masahiro Orita, Hiroshi Kawazoe, Satoshi Kobayashi, Morihiro Niimi, Yuki Tani +1 more | 2011-02-01 |
| 7612432 | P-type ZnS based semiconductor material having a low resistance due to its high copper content | Hiroshi Kawazoe, Masahiro Orita | 2009-11-03 |
| 7355213 | Electrode material and semiconductor element | Hiroshi Kawazoe, Masahiro Orita | 2008-04-08 |
| 7015164 | Optical glass, glass material for press molding, optical element, and method of manufacturing same | Yoshiko Kasuga, Kazuo Tachiwana | 2006-03-21 |
| 6465105 | WDM optical filter and glass substrate for use in the WDM optical filter | Robert W. Johnson, Kazuaki Hashimoto | 2002-10-15 |
| 5856882 | Optical fibers and optical fiber amplifiers | Katsuhisa Itoh, Etsuko Hayashi, Hisayoshi Toratani | 1999-01-05 |
| 5764661 | Laser glasses and laser glass fibers | Hiromasa Tawarayama, Katsuhisa Itoh, Hisayoshi Toratani | 1998-06-09 |
| 5246892 | Faraday rotation glass | Hisayoshi Toratani, Tomoko Kasuga | 1993-09-21 |
| 5070506 | Halide laser glass and laser device utilizing the glass | Keiko Okada | 1991-12-03 |