OKA; Seiji
Patent Applications and Registrations
Patent applications and USPTO patent grants for OKA; Seiji.The latest application filed is for "semiconductor device and power conversion device".
Company Profile
7.53.39
- OKA; Seiji - Chiyoda-ku Tokyo
- Oka; Seiji - Ibaraki JP
- OKA; Seiji - Ibaraki-shi OSAKA
- Oka; Seiji - Tokyo JP
- Oka; Seiji - Osaka JP
- Oka; Seiji - Kusatsu JP
- Oka; Seiji - Ritto JP
- Oka; Seiji - Shiga JP
- Oka; Seiji - Kusatsu-shi JP
- Oka; Seiji - Ritto-shi JP
- Oka; Seiji - Hyogo JP
- Oka; Seiji - Okayama JP
- Oka, Seiji - Okayama-shi JP
- Oka; Seiji - Yokohama JP
- Oka; Seiji - Kawasaki JP
- Oka; Seiji - Amagasaki JP
Patent Activity
| Patent | Date |
|---|---|
| Semiconductor Device And Power Conversion Device App 20220230953 - MORISAKI; Shota ; et al. | 2022-07-21 |
| Control system and power supply unit Grant 11,368,094 - Ogaki , et al. June 21, 2 | 2022-06-21 |
| Control System And Power Supply Unit App 20210028707 - OGAKI; Tatsuo ; et al. | 2021-01-28 |
| Power semiconductor device Grant 10,559,659 - Inoue , et al. Feb | 2020-02-11 |
| Air conditioner with outdoor temperature sensing correlated to outdoor fan control Grant 10,508,849 - Yamakawa , et al. Dec | 2019-12-17 |
| Manufacturing method for semiconductor device Grant 10,490,422 - Ueda , et al. Nov | 2019-11-26 |
| Power semiconductor device and power semiconductor core module Grant 10,418,347 - Tamada , et al. Sept | 2019-09-17 |
| Power Semiconductor Device App 20190058037 - INOUE; Atsufumi ; et al. | 2019-02-21 |
| Semiconductor device Grant 10,204,886 - Yoshida , et al. Feb | 2019-02-12 |
| Power Semiconductor Device And Power Semiconductor Core Module App 20180331077 - TAMADA; Yoshiko ; et al. | 2018-11-15 |
| Semiconductor Device App 20180294253 - YOSHIDA; Hiroshi ; et al. | 2018-10-11 |
| Semiconductor device Grant 10,068,819 - Oka , et al. September 4, 2 | 2018-09-04 |
| Air Conditioner App 20180245837 - YAMAKAWA; Takeshi ; et al. | 2018-08-30 |
| Manufacturing Method For Semiconductor Device App 20180174864 - UEDA; Tetsuya ; et al. | 2018-06-21 |
| Semiconductor Device App 20170372978 - OKA; Seiji ; et al. | 2017-12-28 |
| Semiconductor device Grant 9,287,201 - Shiota , et al. March 15, 2 | 2016-03-15 |
| Power semiconductor module having pattern laminated region Grant 9,196,604 - Tamada , et al. November 24, 2 | 2015-11-24 |
| Power Semiconductor Module App 20150115288 - Tamada; Yoshiko ; et al. | 2015-04-30 |
| Power semiconductor device Grant 8,994,165 - Oi , et al. March 31, 2 | 2015-03-31 |
| Power semiconductor device Grant 8,952,520 - Obiraki , et al. February 10, 2 | 2015-02-10 |
| Semiconductor device and method of manufacturing the same Grant 8,741,695 - Oka , et al. June 3, 2 | 2014-06-03 |
| Semiconductor Device And Method For Manufacturing Semiconductor Device App 20140035123 - OKA; Seiji ; et al. | 2014-02-06 |
| Power semiconductor device Grant 8,610,261 - Oka , et al. December 17, 2 | 2013-12-17 |
| Power semiconductor device, printed wiring board, and mechanism for connecting the power semiconductor device and the printed wiring board Grant 8,575,745 - Oka , et al. November 5, 2 | 2013-11-05 |
| Semiconductor Device App 20130240912 - Shiota; Hiroki ; et al. | 2013-09-19 |
| Power semiconductor device Grant 8,502,385 - Oka , et al. August 6, 2 | 2013-08-06 |
| Semiconductor Device And Method Of Manufacturing The Same App 20130181225 - OKA; Seiji ; et al. | 2013-07-18 |
| Power semiconductor module Grant 8,436,459 - Oka , et al. May 7, 2 | 2013-05-07 |
| Power semiconductor module Grant 8,319,333 - Oka , et al. November 27, 2 | 2012-11-27 |
| Method of manufacturing power semiconductor device Grant 8,313,986 - Oka , et al. November 20, 2 | 2012-11-20 |
| Power semiconductor device Grant 8,304,882 - Oka , et al. November 6, 2 | 2012-11-06 |
| Power semiconductor module and manufacturing method thereof Grant 8,299,601 - Oka , et al. October 30, 2 | 2012-10-30 |
| Power semiconductor device Grant 8,299,603 - Oka , et al. October 30, 2 | 2012-10-30 |
| Power Semiconductor Device And Manufacturing Method For The Same App 20120231586 - OKA; Seiji ; et al. | 2012-09-13 |
| Power semiconductor module Grant 8,258,618 - Obiraki , et al. September 4, 2 | 2012-09-04 |
| Power semiconductor device Grant 8,253,236 - Oi , et al. August 28, 2 | 2012-08-28 |
| Power Semiconductor Device, Printed Wiring Board, And Mechanism For Connecting The Power Semiconductor Device And The Printed Wiring Board App 20120187554 - OKA; Seiji ; et al. | 2012-07-26 |
| Power Semiconductor Device App 20120098138 - OKA; Seiji ; et al. | 2012-04-26 |
| Power Block And Power Semiconductor Module Using Same App 20110260315 - YAMAGUCHI; Yoshihiro ; et al. | 2011-10-27 |
| Power Semiconductor Device App 20110187003 - Oi; Takeshi ; et al. | 2011-08-04 |
| Power Semiconductor Device And Manufacturing Method For The Same App 20110049531 - OKA; Seiji ; et al. | 2011-03-03 |
| Indoor unit of an air conditioner Grant 7,849,706 - Yasutomi , et al. December 14, 2 | 2010-12-14 |
| Power Semiconductor Apparatus App 20100134979 - Obiraki; Yoshiko ; et al. | 2010-06-03 |
| Power Semiconductor Module App 20100133667 - OKA; Seiji ; et al. | 2010-06-03 |
| Power Semiconductor Device App 20100133681 - OKA; Seiji ; et al. | 2010-06-03 |
| Power Semiconductor Module And Manufacturing Method Thereof App 20100133684 - OKA; Seiji ; et al. | 2010-06-03 |
| Power Semiconductor Module App 20100127383 - OKA; Seiji ; et al. | 2010-05-27 |
| Power Semiconductor Module App 20100127389 - Obiraki; Yoshiko ; et al. | 2010-05-27 |
| Power Semiconductor Device App 20100117219 - Oka; Seiji ; et al. | 2010-05-13 |
| Power Semiconductor Device App 20100013085 - Oi; Takeshi ; et al. | 2010-01-21 |
| Power Semiconductor Device App 20100013086 - OBIRAKI; Yoshiko ; et al. | 2010-01-21 |
| Isolated operation detecting method, control apparatus for detecting isolated operation for distributed power supply Grant 7,630,794 - Mabuchi , et al. December 8, 2 | 2009-12-08 |
| Indoor Unit of an Air Conditioner App 20080016897 - Yasutomi; Masanao ; et al. | 2008-01-24 |
| Air Conditioner App 20070277541 - Nakai; Akinori ; et al. | 2007-12-06 |
| Isolated operation detecting method, control apparatus for detecting isolated operation for distributed power supply App 20070179724 - Mabuchi; Masao ; et al. | 2007-08-02 |
| Air conditioner and control method thereof App 20060286923 - Oka; Seiji ; et al. | 2006-12-21 |
| Wiring board, fabrication method of wiring board, and semiconductor device Grant 7,038,143 - Utsumi , et al. May 2, 2 | 2006-05-02 |
| Electric power conversion device with push-pull circuitry Grant 6,807,072 - Tanabe , et al. October 19, 2 | 2004-10-19 |
| Electric power conversion device with push-pull circuitry App 20040027842 - Tanabe, Katsutaka ; et al. | 2004-02-12 |
| Method of manufacturing multi-layer printed wiring board Grant 6,664,127 - Oka , et al. December 16, 2 | 2003-12-16 |
| Wiring board, fabrication method of wiring board, and semiconductor device App 20030213615 - Utsumi, Shigeru ; et al. | 2003-11-20 |
| Method of manufacturing a circuit print board Grant 6,629,362 - Kobayashi , et al. October 7, 2 | 2003-10-07 |
| Method of manufacturing multi-layer printed wiring board App 20020023343 - Oka, Seiji ; et al. | 2002-02-28 |
| Method of manufacturing multi-layer printed wiring board App 20020016018 - Oka, Seiji ; et al. | 2002-02-07 |
| Circuit print board manufacturing method, circuit print board, and carbon sheet App 20010010250 - Kobayashi, Takashi ; et al. | 2001-08-02 |
| Developing machine which uses a developing agent including a toner and magnetic particles Grant 5,822,664 - Oka , et al. October 13, 1 | 1998-10-13 |
| Developing device for an image forming apparatus having developer distribution features Grant 5,805,965 - Tsuda , et al. September 8, 1 | 1998-09-08 |
| Developing device using a toner and carrier mixture Grant 5,771,426 - Oka , et al. June 23, 1 | 1998-06-23 |
| Developing device capable of automatic toner content control Grant 5,771,429 - Oyama , et al. June 23, 1 | 1998-06-23 |
| Developing device for an image forming apparatus Grant 5,758,241 - Oyama , et al. May 26, 1 | 1998-05-26 |
| Developing device for an image forming apparatus and toner cartridge Grant 5,659,860 - Sasaki , et al. August 19, 1 | 1997-08-19 |
| Image forming apparatus having toner recycling device with electrostatic conveyor Grant 5,555,469 - Ishikawa , et al. September 10, 1 | 1996-09-10 |
| Developing unit for an image forming apparatus Grant 5,416,568 - Yoshiki , et al. May 16, 1 | 1995-05-16 |
| Image forming apparatus with replaceable process units Grant 5,235,384 - Oka , et al. August 10, 1 | 1993-08-10 |
| Developing apparatus Grant 5,109,254 - Oka , et al. April 28, 1 | 1992-04-28 |
| Toner supply device for electrophotographic equipment Grant 5,077,584 - Tanaka , et al. December 31, 1 | 1991-12-31 |
| Toner cartridge Grant 4,969,557 - Oka * November 13, 1 | 1990-11-13 |
| Magnetic brush development device for electrostatic latent images Grant 4,800,411 - Tanaka , et al. January 24, 1 | 1989-01-24 |
| Toner cartridge Grant 4,799,608 - Oka January 24, 1 | 1989-01-24 |
| Toner cartridge Grant 4,650,070 - Oka , et al. March 17, 1 | 1987-03-17 |
| Thermosetting resin composition Grant 4,591,623 - Nakajima , et al. May 27, 1 | 1986-05-27 |
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