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For the Inventor, By the Inventor

Oyama, Japan

Yuhachi Takakura

This inventor holds 12 USPTO granted patents. Top assignee: Hitachi, Ltd.. Active years: 1994-2004.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yuhachi Takakura. Retrieved from https://idiyas.com/inventor/yuhachi-takakura

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 12

% Patents Active = 66.7

Average Co-Inventor Count = 5.3

ph-index = 11

Forward Citations = 263(Granted Patents)


Location History:

  • Hitachi, JP (1994)
  • Oyama, JP (1999 - 2003)
  • Tokyo, JP (2004)

Company Filing History:

goldMedal12 out of 42,731 
 
Hitachi, Ltd.
 patents

Years Active: 1994-2004

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12 patents (USPTO):Explore Patents
1. 6690137 - Sensorless control system for synchronous motor (2004-02-10),
2. 6657412 - Pulse width modulation method, pulse width modulator and power converter (2003-12-02),
3. 6650081 - Synchronous motor driving system (2003-11-18),
4. 6642681 - Starting control method of and control apparatus for synchronous motor, and air conditioner, refrigerator, washing machine and vacuum cleaner each provided with the control apparatus (2003-11-04),
5. 6628099 - Synchronous motor driving system and sensorless control method for a synchronous motor (2003-09-30),
6. 6626002 - Controller for PWM/PAM motor, air conditioner, and method of motor control (2003-09-30),
7. 6603280 - Motor controller (2003-08-05),
8. 6479956 - Brushless motor control device and equipment using the control device (2002-11-12),
9. 6198240 - Motor controller (2001-03-06),
10. 6075328 - PWM/PAM control mode switching type motor control apparatus, and motor (2000-06-13),
11. 5929591 - Air conditioner (1999-07-27),
12. 5351182 - Level shift circuit and inverter apparatus using the same (1994-09-27),

Title: The Innovative Journey of Yuhachi Takakura

Introduction: Yuhachi Takakura, a pioneering inventor hailing from Oyama, Japan, has made significant contributions to the world of technology through his groundbreaking innovations.

Latest Patents: Yuhachi Takakura's most recent patents focus on advancements in renewable energy technologies, particularly in the field of solar power efficiency and storage solutions.

Career Highlights: Throughout his illustrious career, Yuhachi Takakura has been recognized for his inventive spirit and dedication to creating sustainable solutions. His work has led to numerous patents that have shaped the renewable energy industry.

Collaborations: Yuhachi Takakura has collaborated with leading research institutions and universities to further his research and bring his innovative ideas to life. His partnerships have been instrumental in pushing the boundaries of technological advancements.

Conclusion: Yuhachi Takakura's passion for innovation and commitment to sustainability continue to inspire future generations of inventors. His legacy in the field of renewable energy serves as a testament to the power of creativity and perseverance in driving positive change.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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