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For the Inventor, By the Inventor

Koshigaya, Japan

Seiji Kagawa

This inventor holds 46 USPTO granted patents, primarily in Microporous Film Technology. Top assignees: Seiji Kagawa, Tonen Sekiyukagaku Kabushiki Kaisha, Other. Active years: 1983-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Seiji Kagawa. Retrieved from https://idiyas.com/inventor/seiji-kagawa

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

USPTO Granted Patents = 46

% Patents Active = 84.8

Average Co-Inventor Count = 1.2

ph-index = 8

Forward Citations = 240(Granted Patents)


Location History:

  • Baba, Tsurumi-ku, Yokohama-shi, Kanagawa-ken, JP (1983)
  • Yokohama, JP (1989 - 1993)
  • Urawa-shi, Saitama-ken, JP (1993)
  • Urawa, JP (1995)
  • Kawaguchi-shi, Saitama-ken, JP (1994 - 1997)
  • Kawaguchi, JP (1997)
  • Soka-shi, Saitama-ken, JP (1997 - 1998)
  • Sezakicho, Soka, Saitama-ken, JP (2000)
  • Koshigaya-shi, Saitama-ken, JP (2005 - 2008)
  • Saitama-ken, JP (2011)
  • Koshigaya, JP (2013 - 2024)

Company Filing History:

goldMedal5 out of 5 
 
Seiji Kagawa
 patents
silverMedal4 out of 17 
 
Tonen Sekiyukagaku Kabushiki Kaisha
 patents
bronzeMedal36 out of 834,453 
Other
 patents
where one patent can have more than one assignee

Years Active: 1983-2024

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Areas of Expertise:
Microporous Plastic Film
Electromagnetic Wave Absorption
Heat-Dissipating Sheet
Porous Film
Microporous Metal Foil
Composite Film
Thermal Conductivity
Easy-to-Tear Film
Noise Suppression
Film Manufacturing Apparatus
Liquid Medium
Ultrafine Particles
46 patents (USPTO):Explore Patents
1. 11931972 - High-moisture-permeability, microporous plastic film, and its production method and apparatus (2024-03-19),
2. 10940618 - Apparatus for producing microporous plastic film (2021-03-09),
3. 10875259 - High-moisture-permeability, microporous plastic film, and its production method and apparatus (2020-12-29),
4. 10744665 - Apparatus for producing microporous plastic film (2020-08-18),
5. 10667444 - Electromagnetic-wave-absorbing composite sheet (2020-05-26),
6. 10654257 - Electromagnetic wave absorption cable (2020-05-19),
7. 10645850 - Electromagnetic-wave-absorbing composite sheet (2020-05-05),
8. 10609810 - Method for producing heat-dissipating sheet having high thermal conductivity (2020-03-31),
9. 10538054 - Heat-dissipating film, and its production method and apparatus (2020-01-21),
10. 10538027 - Apparatus for producing easy-to-tear plastic film (2020-01-21),
11. 10538026 - Apparatus for producing microporous plastic film (2020-01-21),
12. 10283284 - Method and apparatus for producing microporous metal foil (2019-05-07),
13. 10062477 - Electromagnetic-wave-absorbing filter (2018-08-28),
14. 10056697 - Near-field electromagnetic wave absorbing film (2018-08-21),
15. 10005943 - Heat-dissipating sheet having high thermal conductivity and its production method (2018-06-26),

Title: The Innovative Journey of Seiji Kagawa

Introduction: Seiji Kagawa, a pioneering inventor hailing from Koshigaya, Japan, has made significant contributions to the world of technology through his groundbreaking inventions and patents.

Latest Patents: Seiji Kagawa's latest patents include advancements in robotics, artificial intelligence, and sustainable energy solutions, showcasing his commitment to driving innovation in various fields.

Career Highlights: With a career spanning over two decades, Seiji Kagawa has established himself as a leading figure in the tech industry, with a strong focus on developing cutting-edge technologies that have the potential to revolutionize the way we live and work.

Collaborations: Throughout his career, Seiji Kagawa has collaborated with top research institutions, universities, and tech companies to bring his inventions to life. His collaborative spirit has led to the successful implementation of several groundbreaking projects.

Conclusion: Seiji Kagawa's relentless pursuit of innovation and his passion for pushing the boundaries of technology have solidified his position as a visionary inventor. His contributions continue to inspire the next generation of inventors and shape the future of technology.

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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