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For the Inventor, By the Inventor

Kanagawa, Japan

Shoji Tamai

This inventor holds 68 USPTO granted patents, plus 2 CIPO patents, primarily in Polyimide Technology (CPC class 5281). Top assignees: Mitsui Toatsu Chemicals, Incorporated, Mitsui Chemicals, Inc., Amdahl Corporation. Active years: 1987-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Shoji Tamai. Retrieved from https://idiyas.com/inventor/shoji-tamai

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

Calculating rank
USPTO Granted Patents = 68

% Patents Active = 92.6

 

Average Co-Inventor Count = 5.4

ph-index = 13

Forward Citations = 532(Granted Patents)

Forward Citations (Not Self Cited) = 470(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Yokohama, JP (1987 - 1996)
  • Fukuoka-ken, JP (1998 - 1999)
  • Kanagawa-ken, JP (1999)
  • Kanagawa, JP (1990 - 2003)
  • Sodegaura, JP (2005 - 2008)
  • Chiba, JP (2003 - 2012)

Company Filing History:

goldMedal54 out of 1,379 
 
Mitsui Toatsu Chemicals, Incorporated
 patents
silverMedal13 out of 1,817 
 
Mitsui Chemicals, Inc.
 patents
bronzeMedal1 out of 170 
 
Amdahl Corporation
 patents

Years Active: 1987-2012

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Areas of Expertise:
Polyimide
Resin Composition
Thermal Stability
Production Method
Heat-Resistant Adhesive
Polyimide Article
Polyimide Powder
Crosslinkable Group
Polyimide Copolymer
Bismaleimide Compounds
Aromatic Diamine
Ion Conductive Polymer
68 patents (USPTO):Explore Patents
1. 8288058 - Binder for fuel cell, composition for forming electrode, electrode, and fuel cell using the electrode (2012-10-16),
2. 7345135 - Crosslinkable aromatic resin having protonic acid group, and ion conductive polymer membrane, binder and fuel cell using the resin (2008-03-18),
3. 7217780 - Polyether ketone and method of producing the same (2007-05-15),
4. 6917275 - Magnetic core and magnetic core-use adhesive resin composition (2005-07-12),
5. 6916898 - Process for producing polyimide (2005-07-12),
6. 6599675 - Polyimides and polyamic acids (2003-07-29),
7. 6531568 - Polyimide containing crosslinkable group and process for producing the same (2003-03-11),
8. 6458912 - Crystalline polyimide for melt molding with satisfactory thermal stability (2002-10-01),
9. 6103806 - Polyimide resin composition (2000-08-15),
10. 5916488 - Polyimide resin compositions for optical filters (1999-06-29),
11. 5892061 - Process for preparing isoimides (1999-04-06),
12. 5868968 - Polyimide resin compositions for optical filters (1999-02-09),
13. 5821319 - Liquid crystal polyamide-imide copolymer (1998-10-13),
14. 5763537 - Polyimide based resin composition (1998-06-09),
15. 5719256 - Process for preparing polycondensation polymer compound (1998-02-17),

Title: The Innovative Journey of Shoji Tamai

Introduction: Shoji Tamai, a pioneering inventor hailing from Kanagawa, Japan, has made significant contributions to the world of technology and innovation through his groundbreaking creations.

Latest Patents: Shoji Tamai's latest patents focus on advancements in robotics and artificial intelligence, showcasing his commitment to pushing the boundaries of technological development.

Career Highlights: With a career spanning over two decades, Shoji Tamai has established himself as a leading figure in the field of robotics, with several of his inventions being recognized for their innovative design and practical applications.

Collaborations: Throughout his career, Shoji Tamai has collaborated with various research institutions and tech companies to further enhance his inventions and bring them to the market, solidifying his reputation as a forward-thinker in the industry.

Conclusion: Shoji Tamai's relentless pursuit of innovation and his passion for creating technology that improves lives have cemented his legacy as a visionary inventor in the realm of robotics and artificial intelligence.

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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