Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8720040 | Method of manufacturing a hollow waveguide | Akihito Hongo | 2014-05-13 |
| 7664356 | Hollow waveguide and method of manufacturing the same | Akihito Hongo | 2010-02-16 |
| 7405030 | Imide compound and optical recording media made by using the same | Akira Ogiso, Hiroyoshi Shiozaki, Tsutomu Ishida, Hisashi Tsukahara, Tsutami Misawa +4 more | 2008-07-29 |
| RE38979 | Optical information recording medium and composition for optical information recording film | Hideki Umehara, Yuji Inatomi, Takeshi Tsuda, Sumio Hirose | 2006-02-14 |
| 6969764 | Optical recording medium and novel azaporphyrin compounds | Akira Ogiso, Shinobu Inoue, Taizo Nishimoto, Hisashi Tsukahara, Tsutami Misawa +3 more | 2005-11-29 |
| 6673411 | Optical recording medium | Akihiro Koide, Yuji Inatomi | 2004-01-06 |
| 6627288 | Optical recording medium and porphycene compound | Akira Ogiso, Shinobu Inoue, Hisashi Tsukahara, Taizo Nishimoto, Tsutami Misawa | 2003-09-30 |
| 6576321 | Optical recording information medium | Norihiko Mihara | 2003-06-10 |
| 6479123 | Dipyrromethene-metal chelate compound and optical recording medium using thereof | Taizo Nishimoto, Hisashi Tsukahara, Shinobu Inoue, Akira Ogiso, Tsutami Misawa | 2002-11-12 |
| 5876820 | Optical information recording medium and composition for optical information recording film | Hideki Umehara, Yuji Inatomi, Takeshi Tsuda, Sumio Hirose | 1999-03-02 |
| 5610774 | Audio sound recording/reproducing apparatus using semiconductor memory | Kousou Hayashi | 1997-03-11 |
| 5492744 | Optical information recording medium and composition for optical information recording film | Hideki Umehara, Yuji Inatomi, Takeshi Tsuda, Sumio Hirose | 1996-02-20 |
| 5391461 | Optical recording medium and recording method | Shin Aihara, Keiji Ueno, Shinichi Murakami, Sumio Hirose | 1995-02-21 |
| 5369321 | Optical recording medium | Tadahiko Mizukuki, Tomoyoshi Sasakawa, Yuko Suzuki, Kouichi Shiina | 1994-11-29 |
| 5344682 | Optical recording medium | Tadahiko Mizukuki, Nobuhisa Kitagawa, Sumio Hirose | 1994-09-06 |
| 5283094 | Optical recording medium | Tomoyoshi Sasakawa, Nobuhisa Kitagawa, Hiroyuki Hyakutake | 1994-02-01 |
| 5196231 | Optical recording media | Sumio Hirose, Shigeru Takahara, Shin Aihara, Keiji Ueno | 1993-03-23 |
| 5132153 | Optical recording media | Sumio Hirose, Shigeru Takahara, Shin Aihara, Keiji Ueno | 1992-07-21 |
| 4859569 | Optical recording medium | Sumio Hirose, Hiroshi Ozawa, Kenji Abe, Yoichi Hosono, Shigeru Takahara | 1989-08-22 |
| 4719613 | Optical recording medium having a reflective recording layer including a resinous binder and a naphthalocyanine dye | Sumio Hirose, Hiroshi Ozawa, Kenji Abe, Yoichi Hosono, Shigeru Takahara | 1988-01-12 |