Tokyo, Japan

Hiroshi Kojima

This inventor holds 161 USPTO granted patents and 10 published patent applications and 24 EPO patents, primarily in Vibration Isolation (CPC class D12147). Top assignees: Bridgestone Corporation, Bridgestone Tire Company Limited, Dai Nippon Printing Co., Ltd.. Active years: 1977-2025.

USPTO Granted Patents = 161 

% Patents Active = 88.8

 

Average Co-Inventor Count = 2.0

ph-index = 19

Forward Citations = 1,303(Granted Patents)

Forward Citations (Not Self Cited) = 1,236(Dec 10, 2025)


Inventors with similar research interests:

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Location History:

  • Hino, JA (1977 - 1978)
  • Hasaki, JP (1983)
  • Hino, JP (1978 - 1990)
  • Shinjuku, JP (1995)
  • Sinjuku-Ku, JP (1998)
  • Machida, JP (1992 - 1999)
  • Minamiashigara, JP (2006)
  • Hitachinaka, JP (2009 - 2010)
  • Fukushima, JP (2011)
  • Shinjuku-Ku, JP (1999 - 2012)
  • Kanagawa, JP (2009 - 2014)
  • Kawagoe, JP (2014 - 2017)
  • Kounan-ku, JP (2017)
  • Yokohama, JP (1986 - 2018)
  • Tokyo-To, JP (1998 - 2020)
  • Tokyo, JP (1984 - 2024)

Company Filing History:

goldMedal55 out of 5,188 
 
Bridgestone Corporation
 patents
silverMedal51 out of 504 
 
Bridgestone Tire Company Limited
 patents
bronzeMedal20 out of 3,208 
 
Dai Nippon Printing Co., Ltd.
 patents
4. 8 out of 11,665 
 
Fuji Xerox Co., Ltd.
 patents
5. 6 out of 2,560 
 
Asahi Glass Company, Limited
 patents
6. 4 out of 34 
 
Prospira Corporation
 patents
7. 3 out of 2,573 
 
Ebara Corporation
 patents
8. 3 out of 1,252 
 
Konishiroku Photo Industry Co., Ltd.
 patents
9. 3 out of 13,420 
 
Nissan Motor Company Limited
 patents
10. 3 out of 1,709 
 
The Whitaker Corporation
 patents
11. 3 out of 10,850 
 
Tokyo Electron Limited
 patents
12. 2 out of 2,565 
 
Hoya Corporation
 patents
13. 2 out of 290 
 
Nec Infrontia Corporation
 patents
14. 1 out of 630 
 
Dainippon Ink and Chemicals, Incorporated
 patents
15. 1 out of 2,208 
 
Fuji Jukogyo Kabushiki Kaisha
 patents
16. 1 out of 46 
 
Hitachi Information & Telecommunication Engineering, Ltd.
 patents
17. 1 out of 22,006 
 
Honda Motor Co., Ltd.
 patents
18. 1 out of 614 
 
Mitsubishi Chemical Industries Limited
 patents
19. 1 out of 71 
 
Tokyo Electron Yamanashi Limited
 patents
where one patent can have more than one assignee

Years Active: 1977-2025

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Areas of Expertise:
Vibration Damping
Anti-Vibration
Vibration Isolation
Daylighting Sheet
Liquid-Filled Bushing
Optical Sheet
Display Device
Torque Rod
Surface Light Source
Image Encoding
Microchannel Device
Separation Apparatus
161 patents (USPTO):Explore Patents

Title: Hiroshi Kojima: Innovator Extraordinaire in Tokyo

Introduction:

Throughout his remarkable career, Hiroshi Kojima has firmly established himself as a force to be reckoned with in the field of innovation. With numerous accolades and a vast array of patents to his name, Kojima's contributions have revolutionized industries and exemplify his unwavering dedication and expertise. This article delves into his latest patents, highlights his career achievements, explores his collaborations with renowned companies, and celebrates his remarkable journey as an inventor.

Latest Patents:

Kojima's latest patents showcase his ingenuity and commitment to advancing technological solutions. One of his notable inventions is the "Vibration Isolation Device," which involves a partition member with different flow resistances in specific regions. This device serves to diminish vibrations by effectively isolating different liquid chambers. Additionally, his "Vibration-Damping Device" incorporates various restriction passages with differing flow resistances to reduce vibrations. Both patents demonstrate Kojima's ability to optimize performance and enhance functionality.

Career Highlights:

Kojima's career boasts an array of impressive milestones, highlighting his exceptional contributions to the realm of innovation. With a staggering 152 patents to his name, he has consistently pushed boundaries and transformed industries. His relentless pursuit of excellence and commitment to excellence have earned him recognition and numerous prestigious awards, solidifying his position as a trailblazer in his field.

Collaborations:

Throughout his career, Kojima has collaborated with esteemed companies that recognize and support his innovative endeavors. Notably, he has played a pivotal role in driving advancements at Bridgestone Corporation and Bridgestone Tire Company Limited. These collaborations have allowed Kojima to harness his inventive spirit and leverage resources, ultimately resulting in groundbreaking solutions that have had a lasting impact.

Among his coworkers, Kojima has worked closely with Hideaki Nishio and Kazuya Takano, individuals who share his passion for innovation and have contributed significantly to his success. Their collaborations have fostered an environment of creativity, collaboration, and mutual support, further enhancing the impact of their collective work.

Conclusion:

Hiroshi Kojima's exemplary career and numerous patents underscore his unwavering commitment to innovation and his extraordinary contributions to the field. His latest patents, such as the vibration isolation and damping devices, showcase his ability to develop inventive solutions that revolutionize industries. Collaborations with renowned companies like Bridgestone Corporation have allowed Kojima to push boundaries and create transformative technologies. Hiroshi Kojima's legacy as an inventor is one that will continue to inspire future generations of innovators.

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