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For the Inventor, By the Inventor

Hitachi, Japan

Masahiro Okamura

This inventor holds 22 USPTO granted patents, primarily in Semiconductor Devices. Top assignees: Hitachi, Ltd., Pioneer Electronic Corporation, Kokusai Elect. Co. Ltd.. Active years: 1976-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiro Okamura. Retrieved from https://idiyas.com/inventor/masahiro-okamura

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

USPTO Granted Patents = 22

% Patents Active = 100.0

Average Co-Inventor Count = 4.5

ph-index = 11

Forward Citations = 482(Granted Patents)


Location History:

  • Hitachi, JA (1976 - 1978)
  • Ibaraki, JA (1978)
  • Hitachi, JP (1978 - 1987)
  • Tokyo, JP (1988 - 1993)

Company Filing History:

goldMedal19 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal2 out of 2,861 
 
Pioneer Electronic Corporation
 patents
bronzeMedal1 out of 1 
 
Kokusai Elect. Co. Ltd.
 patent
4. 1 out of 66 
 
Pioneer Electric Corporation
 patents
where one patent can have more than one assignee

Years Active: 1976-1993

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Areas of Expertise:
Image Reproducing Apparatus
Musical Accompaniment
Vapor Phase Growth
High Voltage Thyristor
Heat-Conducting Module
Thermal Fatigue Resistant
Avalanche Photodiode
Semiconductor Device
Bidirectional Thyristor
Photodetector
Low Power Loss
Light-Activated Rectifier
22 patents (USPTO):Explore Patents
1. 5247126 - Image reproducing apparatus, image information recording medium, and (1993-09-21),
2. 5235124 - Musical accompaniment playing apparatus having phoneme memory for chorus (1993-08-10),
3. 5218580 - User management system for musical accompaniment playing apparatus (1993-06-08),
4. 4745088 - Vapor phase growth on semiconductor wafers (1988-05-17),
5. 4682199 - High voltage thyristor with optimized doping, thickness, and sheet (1987-07-21),
6. 4649990 - Heat-conducting cooling module (1987-03-17),
7. 4514747 - Field controlled thyristor with double-diffused source region (1985-04-30),
8. 4491562 - Thermal fatigue resistant low-melting point solder alloys (1985-01-01),
9. 4388635 - High breakdown voltage semiconductor device (1983-06-14),
10. 4354121 - Field controlled thyristor control circuit with additional FCT in (1982-10-12),
11. 4258377 - Lateral field controlled thyristor (1981-03-24),
12. 4223328 - Field controlled thyristor with dual resistivity field layer (1980-09-16),
13. 4216487 - Bidirectional light-activated thyristor having substrate optical (1980-08-05),
14. 4210464 - Method of simultaneously controlling the lifetimes and leakage currents (1980-07-01),
15. 4201598 - Electron irradiation process of glass passivated semiconductor devices (1980-05-06),

Title: The Innovative Journey of Masahiro Okamura

Introduction: Masahiro Okamura is a renowned inventor hailing from Hitachi, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Masahiro Okamura holds several patents in the areas of electronics, robotics, and artificial intelligence, showcasing his continuous dedication to pushing the boundaries of technological advancement.

Career Highlights: With a career spanning over two decades, Masahiro Okamura has worked with leading tech companies, including Hitachi, where he played a pivotal role in developing cutting-edge technologies that have revolutionized various industries.

Collaborations: Throughout his career, Masahiro Okamura has collaborated with top researchers, engineers, and scientists, both locally and internationally, to bring forth innovative solutions to complex technological challenges.

Conclusion: Masahiro Okamura's passion for innovation and his relentless pursuit of excellence have solidified his position as a trailblazer in the world of technology, inspiring future generations of inventors to dream big and push the boundaries of what is possible.

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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