Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5145851 | Method for treating urinary obstruction | Masayuki Ishikawa, Hiroshi Azuma, Tomohiro Yamaguchi | 1992-09-08 |
| 5118002 | Easy-opening container packaging | Takuji Sugiyama, Tetsuro Ichikawa | 1992-06-02 |
| 5075308 | Method for treating urinary obstruction | Masayuki Ishikawa, Hiroshi Azuma | 1991-12-24 |
| 4892572 | Optical fiber drawing apparatus | Katsuyuki Tsuneishi, Takashi Yamazaki | 1990-01-09 |
| 4804415 | Process for producing azo pigment | Ryuzo Ueno, Shin-ya Fujimoto, Mayumi Iwao | 1989-02-14 |
| 4663695 | Holding device for mounting an electronic component on a printed circuit board | Eiji Ohkawara | 1987-05-05 |
| 4293553 | 1-Phthalazone derivatives, and use thereof | Masayuki Ishikawa, Hiromichi Tanaka, Yukuo Eguchi, Yoshimi Takashima, Masahiko Kobayashi | 1981-10-06 |
| 4276295 | 3-Aromatic moiety substituted-4(3H)-quinazolinones, process for production thereof, and use thereof | Masayuki Ishikawa, Hiromichi Tanaka, Yukuo Eguchi, Yoshimi Takashima, Masahiko Kobayashi | 1981-06-30 |