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For the Inventor, By the Inventor

Ohramachi, Japan

Fusami Oyama

This inventor holds 8 USPTO granted patents. Top assignee: Fuji Jukogyo Kabushiki Kaisha. Active years: 1987-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Fusami Oyama. Retrieved from https://idiyas.com/inventor/fusami-oyama

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

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 2.8

ph-index = 7

Forward Citations = 109(Granted Patents)


Location History:

  • Gunma, JP (1987)
  • Ohramachi, JP (1987)
  • Ohra, JP (1988)
  • Ouramachi, JP (1989)
  • Tokyo, JP (1990)
  • Shinjuku, JP (1990)

Company Filing History:

goldMedal8 out of 2,208 
 
Fuji Jukogyo Kabushiki Kaisha
 patents

Years Active: 1987-1990

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8 patents (USPTO):Explore Patents
1. 4969532 - Central differential for a four-wheel drive motor vehicle (1990-11-13),
2. 4967861 - Central differential for a four-wheel drive motor vehicle (1990-11-06),
3. 4805721 - Power transmitting system for a four-wheel drive vehicle (1989-02-21),
4. 4787645 - System for steering rear wheels of a motor vehicle (1988-11-29),
5. 4732407 - Suspension system for a motor vehicle (1988-03-22),
6. 4695069 - Steering system for rear wheels (1987-09-22),
7. 4681180 - Power transmission system for rear wheels of a motor vehicle (1987-07-21),
8. 4652002 - Steering system for a motor vehicle (1987-03-24),

Title: The Innovations of Fusami Oyama

Introduction

Fusami Oyama is a notable inventor based in Ohramachi, Japan. He has made significant contributions to the field of automotive engineering, particularly in the development of central differentials for four-wheel drive vehicles. With a total of 8 patents to his name, Oyama's work has had a lasting impact on vehicle performance and safety.

Latest Patents

One of Oyama's latest patents is a central differential designed for four-wheel drive motor vehicles. This innovative differential is equipped on a pair of axles for both right and left drive wheels. The design features a tubular member secured to a final gear of a transmission, along with a pair of carriers—one connected to the drive wheels and the other operatively linked to the opposite drive wheels. Additionally, the differential includes a pair of annular side gears securely mounted on the tubular member, and an annular center gear that is rotatably positioned between the side gears. The system also incorporates a pair of planetary gears that are rotatably supported in the corresponding carrier, each consisting of a pair of planet pinions that engage with both the side gear and the center gear.

Career Highlights

Fusami Oyama has built a successful career at Fuji Jukogyo Kabushiki Kaisha, where he has been instrumental in advancing automotive technology. His expertise in differential systems has positioned him as a key figure in the industry, contributing to the development of more efficient and reliable vehicles.

Collaborations

Throughout his career, Oyama has collaborated with talented individuals such as Akira Takahashi and Takeo Inoue. These partnerships have fostered innovation and creativity, leading to the successful development of various automotive technologies.

Conclusion

Fusami Oyama's contributions to the field of automotive engineering, particularly through his innovative patents, have significantly enhanced vehicle performance. His work continues to influence the industry, showcasing the importance of creativity and collaboration in technological advancements.

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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