Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10725457 | Machining time prediction system | Yasuharu Aizawa | 2020-07-28 |
| 8377225 | Submerged membrane separation apparatus, cleaning method for diffusing apparatus, and method for membrane separation | Junichi Baba, Toshitsugu Onoe | 2013-02-19 |
| 7397830 | Semiconductor laser device | Kenzo Ishibashi, Katsumi Gotoh, Takatoshi Yukimasa | 2008-07-08 |
| 7266073 | Optical disc apparatus, camera apparatus, and method for controlling light emission operation | Kenzo Ishibashi, Akira Yoshikawa, Katsumi Gotoh, Takatoshi Yukimasa | 2007-09-04 |
| 5333234 | Curable composition for use in optical fiber cladding and optical fiber equipped therewith | Yutaka Hashimoto, Jun Shirakami, Masayuki Kamei, Shoshiro Taneichi | 1994-07-26 |
| 5214635 | Erasable optical disk and optical information recording/reproduction apparatus | Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki | 1993-05-25 |
| 5173886 | Composite optical disc having both a data read-only area and a data rewritable area, and a recording/reproducing system for use therewith | Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki, Yuji Takagi | 1992-12-22 |
| 5077720 | Optical information recording and reproducing system and optical disk | Yuji Takagi, Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki, Yasushi Azumatani | 1991-12-31 |
| 5073887 | Optical disk recording and reading system with directory data access mechanism | Yuji Takagi, Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki | 1991-12-17 |
| 5023854 | Disc having a data read-only area and a data recording arm and a recording reproducing system therefor | Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki, Yuji Takagi | 1991-06-11 |
| 4986668 | Information recording and reproducing apparatus with management of defective sector | Yoshihisa Fukushima, Isao Satoh, Yuzuru Kuroki, Yuuji Takagi | 1991-01-22 |
| 4969139 | Optical information recording and reproducing apparatus having an improved detection system for detecting fouling of a disk or an internal optical system | Yasushi Azumatani, Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki, Yuji Takagi | 1990-11-06 |
| 4964094 | Optical disk | Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki, Yuji Takagi, Yasushi Azumatani | 1990-10-16 |
| 4949326 | Optical information recording and reproducing system using optical disks having an error correction function | Yuji Takagi, Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki, Yasushi Azumatani | 1990-08-14 |
| 4939713 | Erasable optical disk and optical information recording/reproduction apparatus | Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki | 1990-07-03 |
| 4885735 | Information recording and reproducing apparatus with management of defective sector | Yoshihisa Fukushima, Isao Satoh, Yuzuru Kuroki, Yuuji Takagi | 1989-12-05 |
| 4879704 | Optical disk, optical disk recording and reproducing apparatus and copy preventive method for optical disks | Yuuji Takagi, Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki | 1989-11-07 |
| 4841498 | Information recording/reproducing apparatus with means for substituting predetermined good sectors for defective ones | Tatuo Sugimura, Isao Satoh, Yoshihiko Imai | 1989-06-20 |
| 4833663 | Information recording/reproducing apparatus for handling defective sectors on an optical disk | Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki, Yuji Takagi | 1989-05-23 |
| 4823333 | Optical disk duplicating apparatus using sector data identification information for controlling duplication | Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki, Yuji Takagi | 1989-04-18 |
| 4821254 | Information recording and reproducing apparatus which detects deterioration of a medium in each sector before recording | Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki, Yuji Takagi | 1989-04-11 |
| 4805046 | Information recording and reproducing apparatus using sectors divided into a plurality of frames and having means for proper storage of the frame data | Yuzuru Kuroki, Isao Satoh, Yoshihisa Fukushima, Yuuji Takagi | 1989-02-14 |
| 4799208 | Optical recording and reproducing apparatus having erasing function with controllable erasing beam | Isao Satoh, Yoshihisa Fukushima, Yuzuru Kuroki, Yuuji Takagi | 1989-01-17 |
| 4789974 | Optical information recording/reproducing apparatus | Isao Satoh, Yuzuru Kuroki, Katsumi Murai | 1988-12-06 |
| 4789911 | Information recording and reproducing apparatus | Yoshihisa Fukushima, Isao Satoh, Yuzuru Kuroki, Yuuji Takagi | 1988-12-06 |