Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11840480 | Optical glass, optical element, optical device, method for producing optical glass, and method for producing optical element | — | 2023-12-12 |
| 11254602 | Optical glass, optical element, optical instrument, and method for manufacturing optical glass | — | 2022-02-22 |
| 9040439 | Optical glass, optical element, and method for manufacturing optical glass | Shingo Eguchi, Hiroyuki Inoue, Atsunobu Masuno | 2015-05-26 |
| 8492298 | Optical material and optical element | Kiyoshi Yamamoto | 2013-07-23 |
| 8338003 | Optical material and optical element | Kohei Nakata, Kentaro Doguchi, Shigeru Fujino | 2012-12-25 |
| 8202813 | Optical material and optical element | Kohei Nakata, Kentaro Doguchi, Shigeru Fujino | 2012-06-19 |
| 7615507 | Optical glass, press-molding glass gob and optical element | — | 2009-11-10 |
| 7598193 | Optical glass, glass gob for press-molding, optical part, process for producing glass shaped material and process for producing optical part | — | 2009-10-06 |
| 7490485 | Optical glass, press-molding glass gob and optical element | — | 2009-02-17 |
| 6926860 | Method and apparatus for manufacturing minute metallic sphere | Masamoto Tanaka | 2005-08-09 |
| 6912093 | Optical glass, press-molding glass gob and optical element | — | 2005-06-28 |
| 6676726 | Method and apparatus for manufacturing minute metallic sphere | Masamoto Tanaka | 2004-01-13 |
| 6645894 | Optical glass and optical part | — | 2003-11-11 |
| 5876478 | Metal mold for glass forming | Hiroto Imamura, Syoichi Sekiguchi, Shigeki Ogura, Isao Arikata, Mitsuji Hirata +3 more | 1999-03-02 |
| 5656104 | Metal mold for glass forming | Hiroto Imamura, Syoichi Sekiguchi, Shigeki Ogura, Isao Arikata, Mitsuji Hirata +3 more | 1997-08-12 |
| 4972035 | Process for preparing ultra-high-molecular-weight polyolefin fine powder | Michiharu Suga, Mamoru Kioka, Toshio Kobayashi, Akifumi Kato | 1990-11-20 |
| 4709742 | Method for producing a thin casting of Cr-series stainless steel | Jiro Harase, Kuniteru Ohta, Tetsurou Takeshita | 1987-12-01 |
| 4614551 | Process for producing low yield ratio, high strength two-phase steel sheet having excellent artificial ageing property after working | Takashi Furukawa, Nagayasu Takemoto, Kunio Watanabe | 1986-09-30 |
| 4437903 | Method for producing two-phase hot rolled steel sheet having high strength and low yield ratio | Takashi Furukawa | 1984-03-20 |