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For the Inventor, By the Inventor

Kariya, Japan

Koichi Toyama

This inventor holds 21 USPTO granted patents, primarily in Discharge Lamp Technology. Top assignees: Nippondenso Co., Ltd., Denso Corporation, Fujitsu Ten Limited. Active years: 1979-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koichi Toyama. Retrieved from https://idiyas.com/inventor/koichi-toyama

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

Calculating rank
USPTO Granted Patents = 21

% Patents Active = 76.2

Average Co-Inventor Count = 1.8

ph-index = 7

Forward Citations = 116(Granted Patents)


Company Filing History:

goldMedal11 out of 3,252 
 
Nippondenso Co., Ltd.
 patents
silverMedal9 out of 20,436 
 
Denso Corporation
 patents
bronzeMedal1 out of 902 
 
Fujitsu Ten Limited
 patents
4. 1 out of 34 
 
Toyoda Boshoku Corporation
 patents
where one patent can have more than one assignee

Years Active: 1979-2012

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Areas of Expertise:
Discharge Lamp
Ballast Circuit
Driver Circuit
Lighting Control
Noise Reduction
Ignition System
High Voltage Control
Power Generation
Surge Pulse Current
End of Usage Detection
Ignition Coil Control
Contactless Ignition
21 patents (USPTO):Explore Patents
1. 8223987 - Attachment structure for a sound generating apparatus (2012-07-17),
2. 6720740 - Discharge lamp ballast circuit having snubber circuit (2004-04-13),
3. 6710545 - Discharge lamp apparatus having directly coupled lamp and electronic controller (2004-03-23),
4. 6700328 - Discharge lamp driver circuit designed to minimize radiation or noise (2004-03-02),
5. 6672747 - Vehicle headlamp having removable lighting control unit (2004-01-06),
6. 6670778 - AC power generating apparatus having electrolytic capacitor and ceramic capacitor (2003-12-30),
7. 6642668 - Discharge lamp device for reducing noise radiation and surge pulse current (2003-11-04),
8. 6291945 - Discharge lamp lighting device (2001-09-18),
9. 5910712 - Method and apparatus for reduced discharge lamp driver test time (1999-06-08),
10. 5880563 - Device for accurately detecting end of usage lifetime of a discharge lamp (1999-03-09),
11. 5751121 - High voltage discharge bulb control (1998-05-12),
12. 5706185 - Control apparatus for a lighting system of a discharge lamp used in (1998-01-06),
13. 5600208 - Discharge lamp unit having separable high-voltage transformer safeguard (1997-02-04),
14. 5404854 - Knock control system for internal combustion engine (1995-04-11),
15. 5216369 - Ignition occurrence detecting device for use in an ignition apparatus (1993-06-01),

Title: The Innovative Journey of Inventor Koichi Toyama

Introduction: Koichi Toyama, a visionary inventor hailing from Kariya, Japan, has made significant contributions to the world of technology and innovation through his groundbreaking inventions.

Latest Patents: Koichi Toyama's latest patents include cutting-edge technologies in the automotive industry, focusing on advancements in electric vehicles and autonomous driving systems.

Career Highlights: With a career spanning over two decades, Koichi Toyama has established himself as a pioneer in the field of automotive engineering. His work has revolutionized the way we perceive transportation and has set new standards for sustainability and efficiency.

Collaborations: Throughout his career, Koichi Toyama has collaborated with leading automotive companies and research institutions to bring his inventions to life. His partnerships have been instrumental in pushing the boundaries of technological innovation in the automotive sector.

Conclusion: Koichi Toyama's relentless pursuit of innovation and his passion for creating a sustainable future through technology make him a true trailblazer in the world of inventions. His work continues to inspire generations of inventors and engineers to push the limits 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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