Issued Patents All Time
Showing 51–73 of 73 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7192897 | Near-infrared light-absorbing glass, near-infrared light-absorbing element, near-infrared light-absorbing filter, and method of manufacturing near-infrared light-absorbing formed glass article, and copper-containing glass | Rie Yamane, Youichi Hachitani | 2007-03-20 |
| 7157391 | Optical glass, preform for press molding and optical element | Yoshiko Kasuga | 2007-01-02 |
| 7090937 | Glass substrate for information recording medium and magnetic information recording medium to which the glass substrate is applied | Mikio Ikenishi, Atsuko Morita | 2006-08-15 |
| 7087543 | Optical glass, press-molding preform and optical element | Yoshiko Kasuga | 2006-08-08 |
| 7015161 | Substrate for information recording medium and magnetic recording medium composed of crystallized glass | — | 2006-03-21 |
| 6995101 | Optical glass and optical product using the same | Hiromasa Tawarayama, Kazutaka Hayashi, Hiroshi Kawazoe | 2006-02-07 |
| 6977232 | Optical glass, preform for press molding and optical part | Kazutaka Hayashi | 2005-12-20 |
| 6960399 | Crystalized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate | Kouji Azegami | 2005-11-01 |
| 6905988 | Substrate for information recording medium and magnetic recording medium composed of crystallized glass | — | 2005-06-14 |
| 6818576 | Glass substrate for information recording medium and magnetic information recording medium to which the glass substrate is applied | Mikio Ikenishi, Atsuko Morita | 2004-11-16 |
| 6786064 | Process for the production of glass molded article | Kazutaka Hayashi, Hiromasa Tawarayama, Hiroshi Kawazoe | 2004-09-07 |
| 6774072 | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate | Kouji Azegami | 2004-08-10 |
| 6627565 | Crystallized glass substrate for information recording medium | Katsuaki Uchida | 2003-09-30 |
| 6627566 | Substrate for information recording medium and magnetic recording medium composed of crystallized glass | — | 2003-09-30 |
| 6599606 | Process for preparation of crystallized glass for information recording disk | — | 2003-07-29 |
| 6569792 | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate | Kouji Azegami | 2003-05-27 |
| 6332338 | Method of producing glass substrate for information recording medium | Kazuaki Hashimoto | 2001-12-25 |
| 6294490 | Crystallized glass for information recording medium, crystallized glass substrate, and information recording medium using the crystallized glass substrate | Kouji Azegami | 2001-09-25 |
| 6214429 | Disc substrates for information recording discs and magnetic discs | Hisayoshi Toratani | 2001-04-10 |
| 6187407 | Glass substrate for magnetic recording medium and method of manufacturing the same | Hisayoshi Toratani | 2001-02-13 |
| 6063470 | Substrate for information recording media and magnetic disc | Hisayoshi Toratani | 2000-05-16 |
| 5997977 | Information recording substrate and information recording medium prepared from the substrate | Kazuaki Hashimoto | 1999-12-07 |
| 5981015 | Method for selecting a material suitable for a substrate for information recording media, material selected using this method, and magnetic disk formed using this material | Hisayoshi Toratani | 1999-11-09 |