Issued Patents All Time
Showing 1–24 of 24 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10903832 | Current drive circuit | — | 2021-01-26 |
| 10128849 | Level shift circuit, semiconductor device, and battery supervisory apparatus | — | 2018-11-13 |
| 9680466 | Analog switch and multiplexer | — | 2017-06-13 |
| 9178428 | Step-down switching circuit | — | 2015-11-03 |
| 8963522 | Current-direction detecting circuit and DC-DC converter | Masafumi Otsuka | 2015-02-24 |
| 8797007 | Semiconductor integrated circuit and DC-DC converter | — | 2014-08-05 |
| 8207722 | DC/DC converter | Masafumi Otsuka, Ryo Tanifuji | 2012-06-26 |
| 6696858 | Level-shifting circuit | — | 2004-02-24 |
| 6336978 | Heat regenerative material formed of particles or filaments | Masashi Sahashi | 2002-01-08 |
| 6045208 | Ink-jet recording device having an ultrasonic generating element array | Shuzo Hirahara, Tutomu Saito, Hitoshi Nagato, Tetsuro Itakura, Satoshi Takayama +13 more | 2000-04-04 |
| 6022486 | Refrigerator comprising a refrigerant and heat regenerative material | Masashi Sahashi | 2000-02-08 |
| 5744943 | Circuitry for supplying DC power to a small-size electronic apparatus | — | 1998-04-28 |
| 5677617 | Micro power supply device using switching element | Toshiro Sato | 1997-10-14 |
| 5593517 | Regenerating material and refrigerator using the same | Akiko Saito, Masashi Sahashi, Akihiko Tsutai, Masami Okamura, Yukiko Nishiyama +1 more | 1997-01-14 |
| 5449416 | Cold accumulating material and method of manufacturing the same | Tomohisa Arai, Naoyuki Sori, Masashi Sahashi | 1995-09-12 |
| 5447034 | Cryogenic refrigerator and regenerative heat exchange material | Toru Kuriyama, Masahiko Takahashi, Hideki Nakagome, Akiko Takahashi | 1995-09-05 |
| 5332029 | Regenerator | Akiko Takahashi | 1994-07-26 |
| 5269854 | Regenerative material | Akiko Takahashi, Masashi Sahashi | 1993-12-14 |
| 5224657 | Cryogenic refrigerator | Toru Kuriyama, Hideki Nakagome | 1993-07-06 |
| 5223046 | Super-magnetostrictive alloy | Tadahiko Kobayashi, Masashi Sahashi | 1993-06-29 |
| 5190599 | Magnetic memory and magnetic alloy thereof | Masashi Sahashi, Tomomi Funayama | 1993-03-02 |
| 5186765 | Cold accumulating material and method of manufacturing the same | Tomohisa Arai, Naoyuki Sori, Masashi Sahashi | 1993-02-16 |
| 5110376 | Super-magnetostrictive alloy | Tadahiko Kobayashi, Masashi Sahashi | 1992-05-05 |
| 4891992 | Torque detecting apparatus | Tadahiko Kobayashi, Masashi Sahashi | 1990-01-09 |