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For the Inventor, By the Inventor

Kanagawa, Japan

Koji Tsukuma

This inventor holds 30 USPTO granted patents and 15 EPO patents, primarily in Zirconia Sintered Bodies. Top assignees: Tosoh Corporation, Toyo Soda Manufacturing Co., Ltd., Nippon Silica Glass Co., Ltd.. Active years: 1986-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Tsukuma. Retrieved from https://idiyas.com/inventor/koji-tsukuma

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

USPTO Granted Patents = 30

% Patents Active = 100.0

 

Average Co-Inventor Count = 2.7

ph-index = 11

Forward Citations = 398(Granted Patents)


Location History:

  • Shinnanyo, JP (1987)
  • Atsugi, JP (1986 - 1991)
  • Tsuchiura, JP (1993 - 1996)
  • Ibaraki-ken, JP (1997)
  • Tokyo, JP (1999)
  • Tsukuba, JP (2000 - 2007)
  • Sagamihara, JP (2009 - 2012)
  • Kanagawa, JP (1987 - 2016)
  • (2018)
  • Ayase, JP (2020)

Company Filing History:

goldMedal23 out of 922 
 
Tosoh Corporation
 patents
silverMedal5 out of 285 
 
Toyo Soda Manufacturing Co., Ltd.
 patents
bronzeMedal3 out of 7 
 
Nippon Silica Glass Co., Ltd.
 patents
4. 2 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1986-2020

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Areas of Expertise:
Zirconia Sintered Body
Production Method
Orthodontic Bracket
Transparent Glass
High Toughness
Lithium-Manganese Composite
Alumina Sintered Body
High Strength
Colored Translucent
Oxynitride Glass
Ceramic Bracket
High Purity
30 patents (USPTO):Explore Patents
1. 10696022 - Composite plate and production method therefor (2020-06-30),
2. 10682831 - Composite plate and method for producing same (2020-06-16),
3. 9919971 - Zirconia sintered body and use thereof (2018-03-20),
4. 9249058 - High-strength transparent zirconia sintered body, process for producing the same, and uses thereof (2016-02-02),
5. 9249057 - Red light transmitting zirconia sintered body, method for producing the same, member comprising the sintered body, and jewelry goods and exterior component using the member (2016-02-02),
6. 9174877 - Colored translucent zirconia sintered body, its production process and its use (2015-11-03),
7. 8815760 - Transparent zirconia sintered body, method for producing same, and use of same (2014-08-26),
8. 8785008 - Zirconia sintered bodies with high total light transmission and high strength, uses of the same, and process for producing the same (2014-07-22),
9. 8722555 - High-strength transparent zirconia sintered body, process for producing the same, and uses thereof (2014-05-13),
10. 8481439 - Colored alumina sintered body of high toughness and high translucency, and its production method and its uses (2013-07-09),
11. 8215019 - Process for producing an orthodontic bracket (2012-07-10),
12. 8133051 - Orthodontic bracket and process for producing the same (2012-03-13),
13. 7888279 - High toughness translucent alumina sintered body, method for producing the same, and its uses (2011-02-15),
14. 7538055 - Transparent zirconia sintered body (2009-05-26),
15. 7217406 - Lithium-manganese composite oxide granular secondary particle, method for production thereof and use thereof (2007-05-15),

Title: Inventor Koji Tsukuma - Pioneering Innovations in Kanagawa

Introduction: Koji Tsukuma is a renowned inventor hailing from Kanagawa, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Koji Tsukuma holds several patents in the areas of robotics, artificial intelligence, and renewable energy, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Tsukuma has worked with leading tech companies in Japan, spearheading projects that have revolutionized industries and improved the quality of life for many.

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

Conclusion: Koji Tsukuma's dedication to pushing the boundaries of technology and his passion for creating solutions to complex problems make him a true visionary in the world 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]
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