OGAWA; Kazutoshi

Patent Applications and Registrations

Patent applications and USPTO patent grants for OGAWA; Kazutoshi.The latest application filed is for "three-phase ac motor drive device, rail vehicle equipped with same, and three-phase ac motor drive method".

Company Profile

2.16.14

OGAWA; Kazutoshi - Tokyo JP
Ogawa; Kazutoshi - Hitachi JP
- Hitachi JP
OGAWA; Kazutoshi - Hitachi-shi JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Three-Phase AC Motor Drive Device, Rail Vehicle Equipped With Same, and Three-Phase AC Motor Drive Method App 20220234450 - SHINOMIYA; Takeshi ; et al.	2022-07-28
Power semiconductor with a Si chip and a wideband chip having matched loss and area ratios Grant 9,171,831 - Ishikawa , et al. October 27, 2	2015-10-27
Power conversion device and temperature rise calculation method thereof Grant 8,952,642 - Ayano , et al. February 10, 2	2015-02-10
Drive Circuit of Semiconductor Switching Element and Power Conversion Circuit Using the Same App 20150003133 - Ogawa; Kazutoshi ; et al.	2015-01-01
Power Semiconductor With A Si Chip And A Wideband Chip Having Matched Loss And Area Ratios App 20140374794 - Ishikawa; Katsumi ; et al.	2014-12-25
Inverter Device App 20140334214 - Katoh; Kaoru ; et al.	2014-11-13
Power semiconductor with a Si chip and a wideband chip having matched loss and area ratios Grant 8,860,170 - Ishikawa , et al. October 14, 2	2014-10-14
Power converter Grant 8,829,838 - Ayano , et al. September 9, 2	2014-09-09
Power converter and motor driving device using the same Grant 08619448 -	2013-12-31
Power converter and motor driving device using the same Grant 8,619,448 - Ogawa , et al. December 31, 2	2013-12-31
Power Semiconductor Apparatus App 20130214328 - Ishikawa; Katsumi ; et al.	2013-08-22
Drive circuit of semiconductor device Grant 8,471,622 - Ishikawa , et al. June 25, 2	2013-06-25
Power Conversion Device and Temperature Rise Calculation Method Thereof App 20130119912 - Ayano; Hideki ; et al.	2013-05-16
Power semiconductor apparatus having a silicon power semiconductor device and a wide gap semiconductor device Grant 8,441,075 - Ishikawa , et al. May 14, 2	2013-05-14
Drive circuit for switching device Grant 8,395,422 - Ogawa , et al. March 12, 2	2013-03-12
Power Converter App 20130015799 - Ayano; Hideki ; et al.	2013-01-17
Switching circuit and power converter Grant 8,110,944 - Ogawa , et al. February 7, 2	2012-02-07
Power Converter And Motor Driving Device Using The Same App 20120007533 - OGAWA; Kazutoshi ; et al.	2012-01-12
Drive Circuit For Switching Device App 20110080192 - Ogawa; Kazutoshi ; et al.	2011-04-07
Drive Circuit Of Semiconductor Device App 20100265746 - ISHIKAWA; Katsumi ; et al.	2010-10-21
Power Semiconductor Apparatus App 20100244092 - ISHIKAWA; Katsumi ; et al.	2010-09-30
Switching Circuit And Power Converter App 20100207450 - OGAWA; Kazutoshi ; et al.	2010-08-19
Automatic circuit adjusting system and circuit adjusting tool therefor Grant 4,819,178 - Isayama , et al. April 4, 1	1989-04-04

uspto.report is an independent third-party trademark research tool that is not affiliated, endorsed, or sponsored by the United States Patent and Trademark Office (USPTO) or any other governmental organization. The information provided by uspto.report is based on publicly available data at the time of writing and is intended for informational purposes only.

While we strive to provide accurate and up-to-date information, we do not guarantee the accuracy, completeness, reliability, or suitability of the information displayed on this site. The use of this site is at your own risk. Any reliance you place on such information is therefore strictly at your own risk.

All official trademark data, including owner information, should be verified by visiting the official USPTO website at www.uspto.gov. This site is not intended to replace professional legal advice and should not be used as a substitute for consulting with a legal professional who is knowledgeable about trademark law.