Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12139570 | Retardation film and production method for retardation film | Takeshi Asada, Hironari Sudeji, Yusuke YASU, Hiroya Nishioka | 2024-11-12 |
| 11970562 | Retardation film and production method for retardation film | Takeshi Asada, Hironari Sudeji, Yusuke YASU, Hiroya Nishioka | 2024-04-30 |
| 11192976 | Copolymer, polymer, molding material and resin molded body | Takashi Houkawa, Takuya KOMATSUBARA, Yasuhiro Shimizu | 2021-12-07 |
| 10647811 | Copolymer, polymer, molding material and resin molded body | Takashi Houkawa, Takuya KOMATSUBARA, Yasuhiro Shimizu | 2020-05-12 |
| 8584721 | Tire with rotation period indication hole, and method of indicating tire rotation period | Takehiko Murata | 2013-11-19 |
| 8180068 | Noise eliminating apparatus | Satoshi Miyata | 2012-05-15 |
| 6683960 | Active noise control apparatus | Juro Ohga | 2004-01-27 |
| 6256581 | Navigation method, device, system and computer readable medium | Kazuhiro Sugiyama | 2001-07-03 |
| 5940499 | Voice switch used in hands-free communications system | Juro Ohga, Hiroyuki Masuda | 1999-08-17 |
| 5790440 | Apparatus for estimating filter coefficients | Juro Ohga | 1998-08-04 |
| 5638311 | Filter coefficient estimation apparatus | Juro Ohga | 1997-06-10 |
| 5602926 | Method and apparatus of determining the sound transfer characteristic of an active noise control system | Tadashi Ohashi, Juro Ohga | 1997-02-11 |
| 5479502 | Speaking apparatus having handfree conversation function | Juro Ohga, Hiroyuki Masuda, Yoshihiro Sakai | 1995-12-26 |
| 5384843 | Hands-free telephone set | Hiroyuki Masuda, Kazutoshi Hosokawa, Juro Ohga | 1995-01-24 |
| 5237562 | Echo path transition detection | Juro Ohga, Hiroyuki Masuda, Yoshihiro Sakai | 1993-08-17 |
| 5146470 | Adaptive digital filter including low-pass filter | Juro Ohga, Hiroyuki Masuda | 1992-09-08 |
| 4908855 | Electronic telephone terminal having noise suppression function | Juro Ohga, Hiroyuki Masuda, Yuka Sato | 1990-03-13 |