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For the Inventor, By the Inventor

Yokohama, Japan

Kenji Koyama

This inventor holds 21 USPTO granted patents. Top assignees: Ricoh Company, Ltd., Sumitomo Electric Industries, Limited, Fujitsu Corporation. Active years: 1985-2015.

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

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

USPTO Granted Patents = 21

% Patents Active = 61.9

Average Co-Inventor Count = 2.8

ph-index = 9

Forward Citations = 264(Granted Patents)


Location History:

  • Yokosuka, JP (1985 - 1986)
  • Kuwana, JP (1991)
  • Kanagawa, JP (1988 - 2010)
  • Yokohama, JP (1988 - 2015)

Company Filing History:

goldMedal10 out of 28,934 
 
Ricoh Company, Ltd.
 patents
silverMedal6 out of 10,631 
 
Sumitomo Electric Industries, Limited
 patents
bronzeMedal5 out of 39,371 
 
Fujitsu Corporation
 patents
4. 1 out of 11 
 
Ricoh Optical Industries Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1985-2015

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21 patents (USPTO):Explore Patents
1. 8964809 - Semiconductor optical integrated device (2015-02-24),
2. 8637329 - Method for producing semiconductor optical integrated device (2014-01-28),
3. 8618638 - Semiconductor optical modulator and method for manufacturing the same (2013-12-31),
4. 8563342 - Method of making semiconductor optical integrated device by alternately arranging spacers with integrated device arrays (2013-10-22),
5. 8124543 - Method for manufacturing semiconductor laser diode (2012-02-28),
6. 7835638 - Image recording apparatus, image recording method, and computer-readable recording medium (2010-11-16),
7. 7499640 - Image-recording apparatus (2009-03-03),
8. 7405421 - Optical integrated device (2008-07-29),
9. 7307368 - DC motor (2007-12-11),
10. 6628893 - DC motor rotation control apparatus (2003-09-30),
11. 6617816 - DC motor rotation detecting apparatus and DC motor rotation control apparatus (2003-09-09),
12. 6570350 - DC motor rotation detecting apparatus and DC motor rotation control apparatus (2003-05-27),
13. 5307110 - Pulse-controlled camera, method for setting control reference position (1994-04-26),
14. 5148212 - Flash control based on calculated required flash energy (1992-09-15),
15. 5041311 - Chemical vapor deposition method using a plasma self-cleaning (1991-08-20),

Title: Kenji Koyama - Pioneering Inventor from Yokohama

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

Latest Patents: Kenji Koyama holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous dedication to pushing the boundaries of technological advancement.

Career Highlights: With a career spanning over two decades, Kenji Koyama has worked with leading tech companies in Japan, spearheading research and development projects that have led to significant technological breakthroughs.

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

Conclusion: Kenji Koyama's relentless pursuit of innovation and his passion for creating technology that positively impacts society solidify his position as a trailblazing inventor in Yokohama 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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