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For the Inventor, By the Inventor

Osaka, Japan

Hirotaka Doi

This inventor holds 16 USPTO granted patents and 6 published patent applications and 6 EPO patents, primarily in Power Conversion Technology. Top assignees: Daikin Industries, Ltd., Panasonic Corporation. Active years: 2011-2026.

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

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

Calculating rank
USPTO Granted Patents = 16 

% Patents Active = 75.0

 

Average Co-Inventor Count = 4.0

ph-index = 3

Forward Citations = 19(Granted Patents)


Location History:

  • Sakai, JP (2015)
  • Settsu, JP (2020)
  • Osaka, JP (2011 - 2023)

Company Filing History:

goldMedal15 out of 4,497 
 
Daikin Industries, Ltd.
 patents
silverMedal1 out of 16,454 
 
Panasonic Corporation
 patents

Years Active: 2011-2026

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Areas of Expertise:
Power Conversion Device
Refrigeration Apparatus
Noise Reduction Circuitry
Inverter Driver
Heat Exchange Unit
Electrical Circuit
Voltage Smoothing Circuit
Solid-State Imaging Device
Air Conditioning Apparatus
Connecting Member
Control Program
Substrate Structure
16 patents (USPTO):Explore Patents
1. 12683484 - Power conversion device and refrigeration apparatus (2026-07-14),
2. 12672230 - Substrate structure (2026-06-30),
3. 12567795 - Noise reduction circuitry, load system and power conversion device (2026-03-03),
4. 12438440 - Noise reduction circuit, power conversion device, and refrigeration apparatus (2025-10-07),
5. 11611285 - Power converter and air conditioner (2023-03-21),
6. 11391472 - Heat exchange unit (2022-07-19),
7. 11211890 - Power conversion apparatus and air-conditioning apparatus (2021-12-28),
8. 10619878 - Inverter driver of air conditioner (2020-04-14),
9. 10495327 - Inverter apparatus (2019-12-03),
10. 10320284 - Inverter device having shunt resistor and printed board with conductive pattern component joining shunt resistor and terminal (2019-06-11),
11. 10038256 - Module-terminal block connection structure and connection method (2018-07-31),
12. 9035193 - Connecting member of electrical circuit (2015-05-19),
13. 9001536 - Voltage smoothing circuit for smoothing voltage from power supply (2015-04-07),
14. 8988836 - Power circuit, and computer-readable recording medium storing a control program for power circuits (2015-03-24),
15. 8618461 - Solid-state imaging device and imaging device (2013-12-31),

Title: Hirotaka Doi - Innovator from Osaka, JP

Introduction: Hirotaka Doi is a renowned inventor hailing from Osaka, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Hirotaka Doi holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Hirotaka Doi has worked with leading tech companies in Japan, spearheading research and development projects that have led to significant advancements in various industries.

Collaborations: Throughout his career, Hirotaka Doi has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge exchange.

Conclusion: Hirotaka Doi's passion for innovation and his relentless pursuit of excellence continue to inspire the next generation of inventors and entrepreneurs in Japan and beyond.

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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