logo

For the Inventor, By the Inventor

Sanda, Japan

Kenji Koishi

This inventor holds 98 USPTO granted patents and 4 EPO patents, primarily in Optical Data Recording (CPC class 369116). Top assignees: Matsushita Electric Industrial Co., Ltd., Panasonic Corporation, Matsushita Electrical Industrial Co., Ltd.. Active years: 1984-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kenji Koishi. Retrieved from https://idiyas.com/inventor/kenji-koishi

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

USPTO Granted Patents = 98

% Patents Active = 86.7

 

Average Co-Inventor Count = 4.0

ph-index = 22

Forward Citations = 1,479(Granted Patents)

Forward Citations (Not Self Cited) = 1,421(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Suita, JP (1984 - 1985)
  • Kawabe, JP (1985 - 1989)
  • Osaka, JP (1992)
  • Takarazuka, JP (1995 - 1996)
  • Sanda, JP (1997 - 2011)
  • Hyogo, JP (1985 - 2013)

Company Filing History:

goldMedal82 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents
silverMedal13 out of 16,454 
 
Panasonic Corporation
 patents
bronzeMedal1 out of 115 
 
Matsushita Electrical Industrial Co., Ltd.
 patents
4. 1 out of 2,887 
 
Victor Company of Japan, Limited
 patents
5. 2 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1984-2013

Loading Chart...
Loading Chart...
Areas of Expertise:
Optical Disk
Recording Method
Barcode Forming
Laser Marking
Magneto-Optical Medium
Cryptocommunication System
Recording Apparatus
Information Recording
Semiconductor Laser Control
Reproduction Apparatus
Recording Medium
98 patents (USPTO):Explore Patents
1. 8472291 - Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk (2013-06-25),
2. 8068392 - Recording method, recording apparatus, and recording medium (2011-11-29),
3. 8023380 - Optical data recording method (2011-09-20),
4. 8014236 - Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk (2011-09-06),
5. 7944786 - Optical disc apparatus and recording power determining method thereof (2011-05-17),
6. 7827111 - Recording medium reproducer, cryptocommunication system and program license system (2010-11-02),
7. 7710842 - Optical disc apparatus and recording power determining method thereof (2010-05-04),
8. 7520001 - Optical disk, an optical disk barcode forming method, an optical disk reproduction apparatus, a marking forming apparatus, a method of forming a laser marking on an optical disk, and a method of manufacturing an optical disk (2009-04-14),
9. 7492689 - Recording method and media having marks and spaces with lengths defined by a predetermined modulation method (2009-02-17),
10. 7489614 - Recording method and media having marks and spaces with lengths defined by a predetermined modulation method (2009-02-10),
11. 7489613 - Recording method and media having marks and spaces with lengths defined by a predetermined modulation method (2009-02-10),
12. 7489612 - Recording method and media having marks and spaces with lengths defined by a predetermined modulation method (2009-02-10),
13. 7486605 - Recording method and media having marks and spaces with lengths defined by a predetermined modulation method (2009-02-03),
14. 7417931 - Information recording method, information recording apparatus and information recording medium (2008-08-26),
15. 7414924 - Magneto-optical recording medium having watermark for preventing unauthorized copy (2008-08-19),

Title: Kenji Koishi - Innovative Inventor from Sanda, Japan

Introduction: Kenji Koishi is a renowned inventor hailing from Sanda, Japan, known for his groundbreaking contributions to the field of technology and innovation.

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

Career Highlights: Throughout his illustrious career, Kenji Koishi has been instrumental in developing cutting-edge technologies that have revolutionized industries. His keen eye for detail and inventive spirit have led to the creation of numerous groundbreaking inventions.

Collaborations: Kenji Koishi has collaborated with leading research institutions, universities, and tech companies to further his innovative projects. His ability to work in diverse teams and leverage collective expertise has resulted in the successful realization of many pioneering ideas.

Conclusion: Kenji Koishi stands as a beacon of innovation in Sanda, Japan, inspiring future generations of inventors to think outside the box and pursue their creative visions relentlessly. His contributions to the world of technology continue to impact society positively, making him a true pioneer in the realm of inventions.

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…