Issued Patents All Time
Showing 151–175 of 208 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5372894 | Magnetic recording media comprising a back coat containing a mixture of a thermosetting resin and photosetting resin and a process therefor | Takayuki Deno, Kenichi Kikuchi, Masamichi Saito, Shigeru Nakano | 1994-12-13 |
| 5352302 | Method of producing a rare-earth permanent magnet | Fumio Takagi, Akira Arai, Seiji Ihara, Koji Akioka | 1994-10-04 |
| 5351030 | Variable attenuator for attenuating gain of analog signal in accordance with digital signal | Kunihiko Gotoh | 1994-09-27 |
| 5252975 | Digital-to-analog converter having resistor networks | Tachio Yuasa, Kunihiko Gotoh | 1993-10-12 |
| 5213631 | Rare earth-iron system permanent magnet and process for producing the same | Koji Akioka, Tatsuya Shimoda | 1993-05-25 |
| 5186761 | Magnetic alloy and method of production | Koji Akioka, Tatsuya Shimoda | 1993-02-16 |
| 5162749 | Amplifier circuit having a feedback circuit | — | 1992-11-10 |
| 5125988 | Rare earth-iron system permanent magnet and process for producing the same | Koji Akioka, Tatsuya Shimoda | 1992-06-30 |
| 5099515 | Secrecy device for wiretapping prevention and detection | Masaki Akagawa | 1992-03-24 |
| 5083652 | Classification accuracy setting device for a coin selector | Yonezo Furuya, Genzo Yoshizawa | 1992-01-28 |
| 5078251 | Coin selecting apparatus | Yukichi Hayashi, Yonezo Furuya, Ichiroh Fukuda, Masaki Akagawa | 1992-01-07 |
| 5076861 | Permanent magnet and method of production | Koji Akioka, Tatsuya Shimoda | 1991-12-31 |
| 5060012 | Image reproducing device which detects the end of a photosensitive film | Takashi Seto, Kouji Ozaki, Shigeru Suzuki | 1991-10-22 |
| 5043407 | Hydrophilic fine gel particles and process for production thereof | Jun Hasegawa, Haruki Oikawa, Yasuo Kataoka, Masayoshi Sekiya | 1991-08-27 |
| 5019731 | Analog switch circuit | — | 1991-05-28 |
| 5011456 | Coin receiving and discharging apparatus | Mitsugu Mikami, Kenji Nishiumi, Kenji Nakajima | 1991-04-30 |
| 4988568 | Hydrophilic fine gel particles and process for production thereof | Jun Hasegawa, Haruki Oikawa, Yasuo Kataoka, Masayoshi Sekiya | 1991-01-29 |
| 4920544 | Delta-sigma modulator | Seiji Endo, Masatsugu Kamimura | 1990-04-24 |
| 4914400 | Differential amplifier circuit improved to shorten a circuit recovery time thereof | Kunihiko Gotoh | 1990-04-03 |
| 4912425 | Operational amplifier circuit having stable operating point | Kunihiko Gotoh | 1990-03-27 |
| 4888571 | Coil means | Satoshi Miyagi, Kazuyoshi Hanabusa | 1989-12-19 |
| 4883158 | Device and method for managing amount of stored coins | Yonezou Furuya, Takeshi Isida, Mitsugu Mikami | 1989-11-28 |
| 4881630 | Coin discriminating apparatus | Osamu Sugimoto, Yonezou Furuya, Takeshi Ishida, Masanori Tanaka, Jun Ishii | 1989-11-21 |
| 4880096 | Bill validator | Hiroshi Hayashi, Ryoji Yamagishi | 1989-11-14 |
| 4878573 | A coin separator having a projecting wall for augmenting the separation of coins of different diameters | Koji Yukimoto | 1989-11-07 |