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For the Inventor, By the Inventor

Saitama, Japan

Hiroyoshi Matsumura

This inventor holds 38 USPTO granted patents and 4 EPO patents, primarily in Optical Devices. Top assignees: Hitachi, Ltd., Hitachi Cable, Inc., Toyo Glass Company, Limited. Active years: 1983-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyoshi Matsumura. Retrieved from https://idiyas.com/inventor/hiroyoshi-matsumura

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

Calculating rank
USPTO Granted Patents = 38

% Patents Active = 100.0


Average Co-Inventor Count = 3.5

ph-index = 16

Forward Citations = 623(Granted Patents)


Location History:

  • Saitaka, JP (1986)
  • Iruma, JP (1985 - 1994)
  • Hidaka, JP (1999)
  • Saitama, JP (1983 - 2011)

Company Filing History:

goldMedal33 out of 42,743 
 
Hitachi, Ltd.
 patents
silverMedal6 out of 836 
 
Hitachi Cable, Inc.
 patents
bronzeMedal4 out of 30 
 
Toyo Glass Company, Limited
 patents
4. 1 out of 1 
 
Hitachi, Ltd. Hitachi Cabel
 patent
where one patent can have more than one assignee

Years Active: 1983-2011

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Areas of Expertise:
GRIN Lens
Optical Fiber
Collimator System
Semiconductor Laser
Optical Modulator
Diffraction Gratings
Optical Switch
Integrated Circuits
Quantum Well Structures
Heteroepitaxial Growth
Optical Gyroscope
Infrared Transmission
38 patents (USPTO):Explore Patents
1. 7921672 - Method for manufacturing GRIN lens (2011-04-12),
2. 7603008 - Optical fiber coupling part and manufacturing method thereof (2009-10-13),
3. 7357005 - Fiber optic collimator system, fiber optic collimator array, and manufacturing method of the fiber optic collimator system and fiber optic collimator array system (2008-04-15),
4. 7346237 - Optical fiber coupling part (2008-03-18),
5. 5867809 - Electric appliance, printed circuit board, remained life estimation (1999-02-02),
6. 5340637 - Optical device diffraction gratings and a photomask for use in the same (1994-08-23),
7. 4933728 - Semiconductor optical device (1990-06-12),
8. 4905057 - Semiconductor devices (1990-02-27),
9. 4900134 - Optical device (1990-02-13),
10. 4887877 - Optical devices and optical integrated circuits (1989-12-19),
11. 4861130 - Optical modulating device utilizing polariton substance (1989-08-29),
12. 4847573 - Optical modulator (1989-07-11),
13. 4841536 - Semiconductor laser devices (1989-06-20),
14. 4840446 - Photo semiconductor device having a multi-quantum well structure (1989-06-20),
15. 4838633 - Semiconductor device with high speed signal transmission arrangement (1989-06-13),

Title: The Innovative Journey of Hiroyoshi Matsumura

Introduction: Hiroyoshi Matsumura is a pioneering inventor based in Saitama, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Matsumura holds several patents in various technological domains, showcasing his continuous dedication to pushing the boundaries of innovation and creativity.

Career Highlights: With a career spanning over two decades, Matsumura has been at the forefront of technological advancements, with a focus on developing solutions that have the potential to revolutionize industries.

Collaborations: Throughout his career, Matsumura has collaborated with leading research institutions, universities, and innovative companies to further his inventions and bring them to life in the market.

Conclusion: Hiroyoshi Matsumura's relentless pursuit of innovation and his passion for creating solutions that make a difference have solidified his position as a prominent figure in the world of inventors and innovators.

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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