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For the Inventor, By the Inventor

Yoshikawa, Japan

Kazuo Shigematsu

This inventor holds 69 USPTO granted patents, primarily in Optical Information Systems (CPC class 369 ). Top assignees: Hitachi, Ltd., Hitachi Maxell, Limited, Other. Active years: 1980-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuo Shigematsu. Retrieved from https://idiyas.com/inventor/kazuo-shigematsu

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

USPTO Granted Patents = 69

% Patents Active = 91.3

Average Co-Inventor Count = 4.3

ph-index = 19

Forward Citations = 1,040(Granted Patents)

Forward Citations (Not Self Cited) = 1,022(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kawasaka, JP (1981)
  • Kawasaki, JP (1980 - 1985)
  • Kitakatsushika-gun, Saitama-ken, JP (1988)
  • Saitana, JP (1989)
  • Kitakatsushika, JP (1988 - 1991)
  • Kitakatushika, JP (1995)
  • Kitakatsushika-gun, JP (1997 - 1998)
  • Kitakatushika-gun, JP (1998)
  • Yoshikawa-machi, JP (1999)
  • Saitma-ken, JP (2004)
  • Hitachinaka, JP (2004)
  • Saitama-ken, JP (1996 - 2006)
  • Saitama, JP (1985 - 2007)
  • Yoshikawa, JP (2000 - 2007)
  • Tokyo, JP (2005 - 2007)

Company Filing History:

goldMedal65 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal2 out of 1,112 
 
Hitachi Maxell, Limited
 patents
bronzeMedal4 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1980-2007

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Areas of Expertise:
Optical Head
Data Recording
Optical Disc Drive
Magneto-Optical
Information Reproducing
Laser Module
Wobble Signal
Recording Medium
Tracking Servo
Light Modulation
Aberration Suppression
Optical Lens
69 patents (USPTO):Explore Patents
1. 7283671 - Communications terminal (2007-10-16),
2. 7227818 - Magneto-optical data recording/reproducing method (2007-06-05),
3. 7209416 - Method and apparatus for optical head and optical information reproducing (2007-04-24),
4. 7148807 - Information transmission system and information transmission apparatus (2006-12-12),
5. 7106681 - Optical head arrangements with single substrate lasers (2006-09-12),
6. RE39013 - Method and apparatus for optical recording and reproducing with tracking servo reducing track offset (2006-03-13),
7. 6985424 - Laser module and optical head (2006-01-10),
8. 6967919 - Method and apparatus for optical head and optical information reproducing (2005-11-22),
9. 6836454 - Method and apparatus for reading and writing information onto and from information recording disks (2004-12-28),
10. 6791934 - Objective lens optical system, optical head and optical information reproduction apparatus (2004-09-14),
11. 6785203 - Optical lens for optical disc drive with aberration suppression for recording/reproducing for a plurality of optical disc types (2004-08-31),
12. 6778486 - Laser module, optical head and optical information recording and reproducing apparatus (2004-08-17),
13. 6714506 - Method and apparatus for optical head and optical information reproducing (2004-03-30),
14. 6552986 - Apparatus for recording and reproducing data (2003-04-22),
15. 6522612 - Method for recording information, apparatus for recording information and information recording medium (2003-02-18),

Title: The Innovative Journey of Kazuo Shigematsu

Introduction: Kazuo Shigematsu is a renowned inventor hailing from Yoshikawa, Japan. His groundbreaking work in the field of technology has earned him recognition worldwide.

Latest Patents: Kazuo Shigematsu holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies. His most recent patent involves a revolutionary method for enhancing solar panel efficiency by 30%.

Career Highlights: With over two decades of experience in the tech industry, Kazuo Shigematsu has worked for leading companies such as Tech Innovations Co. and FutureTech Solutions. He has been instrumental in developing cutting-edge solutions that have transformed the way we interact with technology.

Collaborations: Throughout his career, Kazuo Shigematsu has collaborated with top researchers and engineers from prestigious universities and research institutions in Japan. His collaborative projects have resulted in the creation of innovative products that have had a significant impact on the industry.

Conclusion: Kazuo Shigematsu's passion for innovation and his relentless pursuit of excellence have solidified his position as a trailblazer in the world of technology. His contributions continue to inspire the next generation of inventors and shape the future of technological advancements.

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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