Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11676634 | Method for playing back information recording medium | Hirohisa Yamada, Takayuki Naka, Masaki Yamamoto, Yoshihisa Adachi, Hideharu Tajima | 2023-06-13 |
| 10636445 | Information recording medium and reproduction device | Hirohisa Yamada, Takayuki Naka, Masaki Yamamoto, Yoshihisa Adachi, Hideharu Tajima | 2020-04-28 |
| 10381039 | Reproducing device | Hideharu Tajima, Masaki Yamamoto, Hirohisa Yamada, Takayuki Naka | 2019-08-13 |
| 10192581 | Reproducing device | Hideharu Tajima, Masaki Yamamoto, Hirohisa Yamada, Takayuki Naka | 2019-01-29 |
| 10068605 | Optical information recording medium having first and second pit row of identical reflectance | Takayuki Naka, Hirohisa Yamada, Masaki Yamamoto, Hideharu Tajima | 2018-09-04 |
| 10043545 | Information recording medium and reproduction device | Hirohisa Yamada, Takayuki Naka, Masaki Yamamoto, Yoshihisa Adachi, Hideharu Tajima | 2018-08-07 |
| 9978415 | Optical information recording medium having first and second pit rows of identical reflectance | Takayuki Naka, Hirohisa Yamada, Masaki Yamamoto, Hideharu Tajima | 2018-05-22 |
| 9978416 | Reproducing device | Hideharu Tajima, Masaki Yamamoto, Hirohisa Yamada, Takayuki Naka | 2018-05-22 |
| 9805761 | Reproducing device | Hideharu Tajima, Masaki Yamamoto, Hirohisa Yamada, Takayuki Naka | 2017-10-31 |
| 9767838 | Optical information recording medium and reproduction method | Takayuki Naka, Hirohisa Yamada, Masaki Yamamoto, Hideharu Tajima | 2017-09-19 |
| 9697863 | Information recording medium and reproduction device | Hirohisa Yamada, Takayuki Naka, Masaki Yamamoto, Yoshihisa Adachi, Hideharu Tajima | 2017-07-04 |
| 9666222 | Optical information recording medium having first and second pit row of identical reflectance | Takayuki Naka, Hirohisa Yamada, Masaki Yamamoto, Hideharu Tajima | 2017-05-30 |
| 9633688 | Reproducing device | Hideharu Tajima, Masaki Yamamoto, Hirohisa Yamada, Takayuki Naka | 2017-04-25 |
| 9552838 | Optical information recording medium having first and second pit row of identical reflectance | Takayuki Naka, Hirohisa Yamada, Masaki Yamamoto, Hideharu Tajima | 2017-01-24 |
| 9412408 | Optical information recording medium having first and second pit row of identical reflectance | Takayuki Naka, Hirohisa Yamada, Masaki Yamamoto, Hideharu Tajima | 2016-08-09 |
| 9105278 | Optical information recording medium having super-resolution film | Hideharu Tajima, Go Mori, Yasuhiro Harada, Masaki Yamamoto, Hirohisa Yamada | 2015-08-11 |
| 8913476 | Optical information recording medium having super-resolution film | Hideharu Tajima, Go Mori, Yasuhiro Harada, Masaki Yamamoto, Hirohisa Yamada | 2014-12-16 |
| 8817587 | Optical information recording medium having super-resolution film | Hideharu Tajima, Go Mori, Yasuhiro Harada, Masaki Yamamoto, Hirohisa Yamada | 2014-08-26 |
| 8699313 | Optical information recording medium having super-resolution film | Hideharu Tajima, Go Mori, Yasuhiro Harada, Masaki Yamamoto, Hirohisa Yamada | 2014-04-15 |
| 8437243 | Optical information recording medium | Hideharu Tajima, Atsushi Etoh, Hiroaki Ashiwa, Ryo KOJIMA, Isamu Kuribayashi | 2013-05-07 |
| 7688703 | Optical recording medium and production method thereof | — | 2010-03-30 |
| 7101656 | Optical disk master, optical disk substrate stamper, process for production thereof, and magneto-optical recording medium | Keiji Nishikiori, Koujiro Tanaka | 2006-09-05 |