TOKAI; Yoichi
Patent Applications and Registrations
Patent applications and USPTO patent grants for TOKAI; Yoichi.The latest application filed is for "dc-dc power supply and light emitting device".
- TOKAI; Yoichi - Shinagawa Tokyo JP
- Tokai; Yoichi - Tokyo JP
- TOKAI, YOICHI - YOKOHAMA-SHI JP
- Tokai; Yoichi - Yokohama JP
- Tokai; Yoichi - Urayasu JP
| Patent | Date |
|---|---|
| Dc-dc Power Supply And Light Emitting Device App 20210298148 - TOKAI; Yoichi ; et al. | 2021-09-23 |
| Current drive circuit Grant 10,903,832 - Tokai January 26, 2 | 2021-01-26 |
| Current Drive Circuit App 20190296733 - TOKAI; Yoichi | 2019-09-26 |
| Level shift circuit, semiconductor device, and battery supervisory apparatus Grant 10,128,849 - Tokai November 13, 2 | 2018-11-13 |
| Analog switch and multiplexer Grant 9,680,466 - Tokai June 13, 2 | 2017-06-13 |
| Level Shift Circuit, Semiconductor Device, and Battery Supervisory Apparatus App 20170104489 - Tokai; Yoichi | 2017-04-13 |
| Analog Switch And Multiplexer App 20160204780 - Tokai; Yoichi | 2016-07-14 |
| Step-down switching circuit Grant 9,178,428 - Tokai November 3, 2 | 2015-11-03 |
| Current-direction detecting circuit and DC-DC converter Grant 8,963,522 - Otsuka , et al. February 24, 2 | 2015-02-24 |
| Step-down Switching Circuit App 20140266095 - Tokai; Yoichi | 2014-09-18 |
| Semiconductor integrated circuit and DC-DC converter Grant 8,797,007 - Tokai August 5, 2 | 2014-08-05 |
| Semiconductor Integrated Circuit And Dc-dc Converter App 20130141060 - TOKAI; Yoichi | 2013-06-06 |
| Current-direction Detecting Circuit And Dc-dc Converter App 20120235656 - OTSUKA; Masafumi ; et al. | 2012-09-20 |
| DC/DC converter Grant 8,207,722 - Otsuka , et al. June 26, 2 | 2012-06-26 |
| Dc/dc Converter App 20110221415 - Otsuka; Masafumi ; et al. | 2011-09-15 |
| Dc/dc Converter App 20100052627 - Otsuka; Masafumi ; et al. | 2010-03-04 |
| Level-shifting circuit Grant 6,696,858 - Tokai February 24, 2 | 2004-02-24 |
| Ink-jet Recording Device App 20020044171 - HIRAHARA, SHUZO ; et al. | 2002-04-18 |
| Level-shifting current App 20020027450 - Tokai, Yoichi | 2002-03-07 |
| Ink-jet recording device having an ultrasonic generating element array Grant 6,045,208 - Hirahara , et al. April 4, 2 | 2000-04-04 |
| Micro power supply device using switching element Grant 5,677,617 - Tokai , et al. October 14, 1 | 1997-10-14 |
| Cold accumulating material and method of manufacturing the same Grant 5,449,416 - Arai , et al. September 12, 1 | 1995-09-12 |
| Cryogenic refrigerator and regenerative heat exchange material Grant 5,447,034 - Kuriyama , et al. September 5, 1 | 1995-09-05 |
| Super-magnetostrictive alloy Grant 5,223,046 - Kobayashi , et al. June 29, 1 | 1993-06-29 |
| Cold accumulating material and method of manufacturing the same Grant 5,186,765 - Arai , et al. February 16, 1 | 1993-02-16 |
| Super-magnetostrictive alloy Grant 5,110,376 - Kobayashi , et al. May 5, 1 | 1992-05-05 |
| Torque detecting apparatus Grant 4,891,992 - Kobayashi , et al. January 9, 1 | 1990-01-09 |
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