Hirakawa; Mitsuaki
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hirakawa; Mitsuaki.The latest application filed is for "power conversion device in electric vehicle".
Company Profile
0.43.40
- Hirakawa; Mitsuaki - Wako JP
- Hirakawa; Mitsuaki - Saitama N/A JP
- HIRAKAWA; Mitsuaki - Wako-shi JP
- Hirakawa; Mitsuaki - Satama JP
- Hirakawa; Mitsuaki - Tokyo JP
Patent Activity
| Patent | Date |
|---|---|
| Power conversion device in electric vehicle Grant 9,327,658 - Watanabe , et al. May 3, 2 | 2016-05-03 |
| DC-DC converter control apparatus Grant 9,252,665 - Hashino , et al. February 2, 2 | 2016-02-02 |
| DC-DC converter and power supplying system using a DC-DC converter Grant 8,664,926 - Nakatomi , et al. March 4, 2 | 2014-03-04 |
| Bidirectional boost-buck DC-DC converter Grant 8,659,272 - Watanabe , et al. February 25, 2 | 2014-02-25 |
| Power Conversion Device In Electric Vehicle App 20140001838 - WATANABE; Yasuto ; et al. | 2014-01-02 |
| Fuel cell power supply Grant 8,481,220 - Hirakawa , et al. July 9, 2 | 2013-07-09 |
| Battery assembling body and vehicle on which battery assembling body is mounted Grant 8,440,338 - Sato , et al. May 14, 2 | 2013-05-14 |
| Dc-dc Converter Control Apparatus App 20130069610 - Hashino; Satoshi ; et al. | 2013-03-21 |
| Composite transformer Grant 8,400,250 - Nagano , et al. March 19, 2 | 2013-03-19 |
| Composite transformer Grant 8,325,004 - Nagano , et al. December 4, 2 | 2012-12-04 |
| DC-DC converter and power supplying system including same Grant 8,228,690 - Watanabe , et al. July 24, 2 | 2012-07-24 |
| Dc/dc Converter App 20120134180 - Watanabe; Yasuto ; et al. | 2012-05-31 |
| Power converter Grant 8,184,421 - Watanabe , et al. May 22, 2 | 2012-05-22 |
| Combined type transformer and buck-boost circuit using the same Grant 8,138,744 - Nagano , et al. March 20, 2 | 2012-03-20 |
| Composite Transformer App 20120062349 - NAGANO; Masao ; et al. | 2012-03-15 |
| Composite Transformer App 20120056704 - NAGANO; Masao ; et al. | 2012-03-08 |
| Power converter Grant 8,106,635 - Watanabe , et al. January 31, 2 | 2012-01-31 |
| Fuel cell power supply device Grant 8,097,373 - Fujino , et al. January 17, 2 | 2012-01-17 |
| Power supply system Grant 8,084,988 - Fujino , et al. December 27, 2 | 2011-12-27 |
| Battery Heating Apparatus For Vehicle App 20110298427 - UEMURA; Takuro ; et al. | 2011-12-08 |
| Vehicle mounted with fuel cell power supply system Grant 8,037,956 - Noguchi , et al. October 18, 2 | 2011-10-18 |
| Multi-parallel magnetic-field cancellation type transformer Grant 8,013,703 - Hashino , et al. September 6, 2 | 2011-09-06 |
| Vehicle power supply device Grant 8,008,801 - Fujino , et al. August 30, 2 | 2011-08-30 |
| Fuel cell power supply device Grant 7,994,751 - Noguchi , et al. August 9, 2 | 2011-08-09 |
| Power supply device for vehicles Grant 7,994,745 - Fujino , et al. August 9, 2 | 2011-08-09 |
| Power System App 20110156642 - NOGUCHI; Minoru ; et al. | 2011-06-30 |
| Power converter and multiport power converter Grant 7,965,069 - Watanabe , et al. June 21, 2 | 2011-06-21 |
| Electric power converter Grant 7,948,221 - Watanabe , et al. May 24, 2 | 2011-05-24 |
| Dc-dc Converter And Power Supplying System Including Same App 20110032733 - WATANABE; Yasuto ; et al. | 2011-02-10 |
| Vehicle Grant 7,861,812 - Hirakawa , et al. January 4, 2 | 2011-01-04 |
| Multi-parallel Magnetic-field Cancellation Type Transformer App 20100320994 - HASHINO; Satoshi ; et al. | 2010-12-23 |
| Combined Type Transformer And Buck-boost Circuit Using The Same App 20100320982 - NAGANO; Masao ; et al. | 2010-12-23 |
| Composite transformer and power converter using same Grant 7,839,255 - Nagano , et al. November 23, 2 | 2010-11-23 |
| Combined type transformer and buck-boost circuit using the same Grant 7,808,355 - Nagano , et al. October 5, 2 | 2010-10-05 |
| Dc-dc Converter And Power Supplying System Using Same App 20100244798 - NAKATOMI; Somei ; et al. | 2010-09-30 |
| Multiple input/output power converter and fuel cell vehicle with same Grant 7,804,196 - Watanabe , et al. September 28, 2 | 2010-09-28 |
| Multi-parallel magnetic-field cancellation type transformer Grant 7,796,003 - Hashino , et al. September 14, 2 | 2010-09-14 |
| Fuel Cell Power Supply Device App 20100104906 - Hirakawa; Mitsuaki ; et al. | 2010-04-29 |
| Power Converter App 20100066341 - WATANABE; Yasuto ; et al. | 2010-03-18 |
| Power supply system App 20090289589 - Fujino; Takeshi ; et al. | 2009-11-26 |
| Composite transformer and power converter using same App 20090289751 - Nagano; Masao ; et al. | 2009-11-26 |
| Power converter App 20090290269 - Watanabe; Yasuto ; et al. | 2009-11-26 |
| Magnetic-field cancellation type transformer App 20090267718 - Nagano; Masao ; et al. | 2009-10-29 |
| Phase control device for DC/DC converter Grant 7,602,165 - Watanabe , et al. October 13, 2 | 2009-10-13 |
| Booster circuit Grant 7,583,064 - Kimura , et al. September 1, 2 | 2009-09-01 |
| Battery assembling body and vehicle on which battery assembling body is mounted App 20090191451 - Sato; Kazuo ; et al. | 2009-07-30 |
| Fuel cell power supply App 20090186247 - Hirakawa; Mitsuaki ; et al. | 2009-07-23 |
| Multi-parallel magnetic-field cancellation type transformer App 20090180305 - Hashino; Satoshi ; et al. | 2009-07-16 |
| Vehicle power supply device App 20090146493 - Fujino; Takeshi ; et al. | 2009-06-11 |
| Fuel cell power supply device App 20090142634 - Fujino; Takeshi ; et al. | 2009-06-04 |
| Vehicle mounted with fuel cell power supply system App 20090133943 - Noguchi; Minoru ; et al. | 2009-05-28 |
| DC/DC converter Grant 7,504,811 - Watanabe , et al. March 17, 2 | 2009-03-17 |
| Fuel cell power supply device App 20090039839 - Noguchi; Minoru ; et al. | 2009-02-12 |
| Power supply device for vehicles App 20090039815 - Fujino; Takeshi ; et al. | 2009-02-12 |
| Combined type transformer and buck-boost circuit using the same App 20080297126 - Nagano; Masao ; et al. | 2008-12-04 |
| Power converter and multiport power converter App 20080238383 - Watanabe; Yasuto ; et al. | 2008-10-02 |
| Vehicle App 20080230290 - Hirakawa; Mitsuaki ; et al. | 2008-09-25 |
| Electric power converter App 20080211316 - Watanabe; Yasuto ; et al. | 2008-09-04 |
| Pre-charging system for smoothing capacitor Grant 7,400,116 - Kato , et al. July 15, 2 | 2008-07-15 |
| Discharging system for smoothing capacitor Grant 7,388,353 - Kato , et al. June 17, 2 | 2008-06-17 |
| Multiple input/output power converter and fuel cell vehicle with same App 20080136260 - Watanabe; Yasuto ; et al. | 2008-06-12 |
| DC/DC converter App 20080049475 - Watanabe; Yasuto ; et al. | 2008-02-28 |
| Phase control device for DC/DC converter App 20080036435 - Watanabe; Yasuto ; et al. | 2008-02-14 |
| Booster circuit App 20080012626 - Kimura; Kouya ; et al. | 2008-01-17 |
| DC/DC converter Grant 7,304,461 - Watanabe , et al. December 4, 2 | 2007-12-04 |
| DC/DC converter having transistor switches with flywheel diodes and program for controlling the transistor switches Grant 7,292,462 - Watanabe , et al. November 6, 2 | 2007-11-06 |
| DC/DC converter and program Grant 7,151,364 - Kimura , et al. December 19, 2 | 2006-12-19 |
| DC/DC converter App 20060103359 - Watanabe; Yasuto ; et al. | 2006-05-18 |
| Discharging system for smoothing capacitor App 20050231171 - Kato, Takeshi ; et al. | 2005-10-20 |
| Pre-charging system for smoothing capacitor App 20050231172 - Kato, Takeshi ; et al. | 2005-10-20 |
| DC/DC converter and program App 20050174098 - Watanabe, Yasuto ; et al. | 2005-08-11 |
| DC/DC converter and program App 20050174097 - Kimura, Kouya ; et al. | 2005-08-11 |
| Driving force control system for four-wheel drive vehicles Grant 6,419,040 - Kitano , et al. July 16, 2 | 2002-07-16 |
| Driving force control system for four-wheel drive vehicles App 20010005704 - Kitano, Kazuhiko ; et al. | 2001-06-28 |
| Regenerative braking system Grant 6,222,334 - Tamagawa , et al. April 24, 2 | 2001-04-24 |
| Foot structure for legged walking robot Grant 5,255,753 - Nishikawa , et al. October 26, 1 | 1993-10-26 |
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