logo

For the Inventor, By the Inventor

Tokyo, Japan

Hirotaka Yamamoto

This inventor holds 13 USPTO granted patents and 1 published patent application. Top assignees: Denyo Kabushiki Kaisha, Mitsumi Electric Company Ltd., Tdk Electronics Company, Limited. Active years: 1978-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hirotaka Yamamoto. Retrieved from https://idiyas.com/inventor/hirotaka-yamamoto

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

USPTO Granted Patents = 13 

% Patents Active = 84.6

Average Co-Inventor Count = 3.3

ph-index = 8

Forward Citations = 371(Granted Patents)


Location History:

  • Kawagoe, JP (1998 - 1999)
  • Fukuoka, JP (1998 - 2006)
  • Iizuka, JP (2006)
  • Tokyo, JP (1978 - 2013)

Company Filing History:

goldMedal5 out of 27 
 
Denyo Kabushiki Kaisha
 patents
silverMedal5 out of 1,576 
 
Mitsumi Electric Company Ltd.
 patents
bronzeMedal1 out of 333 
 
Tdk Electronics Company, Limited
 patents
4. 1 out of 16 
 
Tokyo Denki Kagaku Kogyo Kabushiki Kaisha
 patents
5. 1 out of 2 
 
Tokyo Denki Kagaku Kogyo Kabushiki Kaisha (Tdk Electronics Co., Ltd.)
 patents

Years Active: 1978-2013

Loading Chart...
13 patents (USPTO):Explore Patents
1. 8391019 - Connection terminal and AC adapter (2013-03-05),
2. 7123488 - DC/DC converter including a Zener diode having a substantially zero temperature coefficient (2006-10-17),
3. D517985 - Adapter (2006-03-28),
4. D452842 - Adapter (2002-01-09),
5. 6006418 - Method of manufacturing a rotors with permanent magnet (1999-12-28),
6. 5936320 - Engine-driven permanent magnetic type welding generator (1999-08-10),
7. 5828152 - Rotor with permanent magnet of generator and method of manufacturing the (1998-10-27),
8. 5796190 - Engine-driven permanent magnetic type welding generator (1998-08-18),
9. 5726875 - AC-DC adapter (1998-03-10),
10. D384033 - Engine-driven electric generator for welding (1997-09-23),
11. 4363088 - Electric power source units (1982-12-07),
12. 4110260 - Electroconductive composite ceramics (1978-08-29),
13. 4098725 - Low thermal expansive, electroconductive composite ceramics (1978-07-04),

As an AI assistant specialized in innovations, inventions, inventors, patent attorneys, assignees, and patents, I am here to assist you with an article about inventor Hirotaka Yamamoto.

Title: The Ingenious Mind of Hirotaka Yamamoto: Pioneering Innovations in Tokyo

Introduction: Hirotaka Yamamoto, a prolific inventor based in Tokyo, Japan, has made significant contributions to the field of technology with a total of 13 patents to his name.

Latest Patents:

1. Connection Terminal and AC Adapter: Yamamoto's recent invention involves a connection terminal with intricate features such as elastic contact pieces and support parts to enhance terminal connectivity.

2. DC/DC Converter with Zener Diode: His innovative DC/DC converter integrates a Zener diode with a zero temperature coefficient, providing stable voltage regulation within a specific range.

Career Highlights: Yamamoto's career has been marked by his tenure at renowned companies like Mitsumi Electric Company Ltd. and Denyo Kabushiki Kaisha, where he showcased his prowess in inventing cutting-edge technologies.

Collaborations: Throughout his career, Yamamoto collaborated with talented individuals like Masanobu Takeda and Yasumasa Mizuno, fostering a creative environment for groundbreaking innovations.

Conclusion: Hirotaka Yamamoto's inventive spirit and dedication to technological advancement have solidified his position as a pioneering inventor in Tokyo, shaping the future of the industry through his patents and collaborations.

Should you need further information or details regarding innovators, inventions, or patents, feel free to reach out or explore our website, idiyas.com.

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]
Loading…