Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9718723 | Glass article | Junko Akojima, Teruo Yamashita | 2017-08-01 |
| 9663402 | Method for manufacturing optical element | Teruo Yamashita, Shigeru Hayashi, Junko Akojima | 2017-05-30 |
| 9236077 | Glass for use as substrate for information recording medium, substrate for information recording medium and information recording medium, and their production methods | Yoichi Hachitani, Xuelu Zou, Mikio Ikenishi, Kinobu Osakabe | 2016-01-12 |
| 8785011 | Glass for use as substrate for information recording medium, substrate for information recording medium and information recording medium, and their production methods | Yoichi Hachitani, Xuelu Zou, Mikio Ikenishi, Kinobu Osakabe | 2014-07-22 |
| 8656734 | Material for information recording medium substrate, information recording medium substrate, information recording medium, and method for manufacturing them | Xuelu Zou, Yoichi Hachitani | 2014-02-25 |
| 8479539 | Optical glass, glass material for press molding, optical element, and method of manufacturing same | Yoshiko Kasuga, Hiroaki Yanagita | 2013-07-09 |
| 8357459 | Glass for use in substrate for information recording medium, substrate for information recording medium and information recording medium, and their manufacturing method | Yoichi Hachitani, Xuelu Zou, Mikio Ikenishi, Kinobu Osakabe | 2013-01-22 |
| 8076014 | Glass for use in substrate for information recording medium, substrate for information recording medium and information recording medium, and their manufacturing method | Yoichi Hachitani, Xuelu Zou, Mikio Ikenishi, Kinobu Osakabe | 2011-12-13 |
| 8077406 | On-vehicle camera lens glass material and on-vehicle camera lens | Yoichi Hachitani | 2011-12-13 |
| 7501369 | Optical glass and process for the production of optical products | — | 2009-03-10 |
| 7015164 | Optical glass, glass material for press molding, optical element, and method of manufacturing same | Yoshiko Kasuga, Hiroaki Yanagita | 2006-03-21 |
| 6156684 | Light polarization control element using stress-optical coefficient glass and method of producing the stress-optical coefficient glass | Kouichi Sato | 2000-12-05 |
| 5972460 | Information recording medium | — | 1999-10-26 |
| 5668066 | Near infrared absorption filter glass | Hironori Oguma | 1997-09-16 |
| 4996173 | Optical glass | — | 1991-02-26 |