Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8479539 | Optical glass, glass material for press molding, optical element, and method of manufacturing same | Kazuo Tachiwana, Hiroaki Yanagita | 2013-07-09 |
| 7994082 | Preforms for precision press molding, optical elements, and methods of manufacturing the same | Xuelu Zou, Yasuhiro Fujiwara | 2011-08-09 |
| 7827823 | Optical glass, precision press-molding preform, process for producing the preform, optical element and process for producing the element | Xuelu Zou | 2010-11-09 |
| 7745361 | Optical glass, preform for precision press molding and method of manufacturing thereof, optical element and method of manufacturing thereof | Yasuhiro Fujiwara, Xuelu Zou | 2010-06-29 |
| 7700507 | Optical glass, preform for precision press-molding, process for the production of the preform, optical element, and process for the production of the element | Xuelu Zou | 2010-04-20 |
| 7670978 | Optical glass, precision press molding preform and optical element | Mikio Ikenishi, Xuelu Zou | 2010-03-02 |
| 7351675 | Optical glass, precision press-molding preform, process for production thereof, optical element and process for the production thereof | Xuelu Zou | 2008-04-01 |
| 7232779 | Optical glass, precision press molding preform and method of manufacturing the same, optical element and method of manufacturing the same | Xuelu Zou | 2007-06-19 |
| 7157391 | Optical glass, preform for press molding and optical element | Xuelu Zou | 2007-01-02 |
| 7087543 | Optical glass, press-molding preform and optical element | Xuelu Zou | 2006-08-08 |
| 7015164 | Optical glass, glass material for press molding, optical element, and method of manufacturing same | Kazuo Tachiwana, Hiroaki Yanagita | 2006-03-21 |