Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8402786 | Synthetic silica glass optical component and process for its production | Yoshiaki Ikuta, Shinya Kikugawa, Akio Masui, Shuhei Yoshizawa | 2013-03-26 |
| 8119268 | Glass for information recording media substrate, glass substrate for magnetic disk and magnetic disk | Tetsuya Nakashima, Kei Maeda, Atsuyoshi Takenaka | 2012-02-21 |
| 7959493 | Method for polishing glass substrate and process for producing glass substrate | Mitsuru Horie, Hiroyuki Tomonaga, Masabumi Ito | 2011-06-14 |
| 7838136 | Glass for information recording media substrate, glass substrate for magnetic disk and magnetic disk | Tetsuya Nakashima, Kei Maeda, Atsuyoshi Takenaka | 2010-11-23 |
| 7022633 | Synthetic quartz glass and process for producing it | Yoshiaki Ikuta, Shinya Kikugawa, Akio Masui, Shuhei Yoshizawa | 2006-04-04 |
| 6891147 | Wavelength-selective diffraction element and an optical head device | Ryuichiro Goto, Hiroki Hotaka, Yoshiharu Ooi, Reiko Nozawa, Ryota Murakami | 2005-05-10 |
| 6611317 | Exposure apparatus, semiconductor device, and photomask | Tohru Ogawa, Hideo Hosono, Shinya Kikugawa, Yoshiaki Ikuta, Akio Masui +1 more | 2003-08-26 |
| 6576578 | Synthetic quartz glass and method for preparing the same | Yoshiaki Ikuta, Shinya Kikugawa, Akio Masui, Shuhei Yoshizawa | 2003-06-10 |
| 6544914 | Synthetic quartz glass for optical member, process for producing the same, and method of using the same | Shinya Kikugawa, Yoshiaki Ikuta, Akio Masui, Shuhei Yoshizawa | 2003-04-08 |
| 6499317 | Synthetic quartz glass and method for production thereof | Yoshiaki Ikuta, Shinya Kikugawa, Akio Masui, Shuhei Yoshizawa | 2002-12-31 |
| 6038123 | Electric double layer capacitor, and carbon material and electrode therefor | Takeshi Kawasato, Kazuya Hiratsuka, Manabu Suhara, Manabu Tsushima | 2000-03-14 |