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For the Inventor, By the Inventor

Funabashi, Japan

Tetsuo Haraikawa

This inventor holds 27 USPTO granted patents, primarily in Vehicle Braking Systems. Top assignee: Tokico, Ltd.. Active years: 1976-1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tetsuo Haraikawa. Retrieved from https://idiyas.com/inventor/tetsuo-haraikawa

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

USPTO Granted Patents = 27

% Patents Active = 100.0

Average Co-Inventor Count = 1.5

ph-index = 9

Forward Citations = 167(Granted Patents)


Location History:

  • Funabashi, JA (1976 - 1978)
  • Chiba, JP (1986)
  • Funabashi, JP (1979 - 1988)

Company Filing History:

goldMedal27 out of 548 
 
Tokico, Ltd.
 patents

Years Active: 1976-1988

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Areas of Expertise:
Braking Device
Vehicle Braking System
Mechanical Disc Brake
Floating Caliper
Hydraulic Master Cylinder
Anti-Squeal Device
Disc Brake Friction Pad
Shoe Drum Brake
Brake Booster
Guiding Structure
Adjusting Device
Two-Wheeled Vehicle
27 patents (USPTO):Explore Patents
1. 4725952 - Braking device for use in vehicle (1988-02-16),
2. 4630706 - Vehicle braking system (1986-12-23),
3. 4390084 - Mechanical disc brake (1983-06-28),
4. 4360082 - Disc brake (1982-11-23),
5. 4343381 - Disc brake friction pad retaining means and guide seal (1982-08-10),
6. 4311214 - Disc brake (1982-01-19),
7. 4296844 - Floating caliper type disc brake (1981-10-27),
8. 4284176 - Mechanically operated disc brake (1981-08-18),
9. 4228875 - Mechanical disc brake (1980-10-21),
10. 4222465 - Disc brake friction pad retaining structure (1980-09-16),
11. 4162720 - Mechanical disc brake (1979-07-31),
12. 4148380 - Automatic shoe clearance adjusting device in shoe drum brake (1979-04-10),
13. 4088204 - Mechanical disc brake including floating actuator (1978-05-09),
14. 4086986 - Floating caliper-type disc brake (1978-05-02),
15. 4084664 - Disc brake (1978-04-18),

Title: **Innovative Solutions by Tetsuo Haraikawa**

Introduction

Tetsuo Haraikawa is a prominent inventor based in Funabashi, Japan. With an impressive portfolio of 27 patents, his work predominantly focuses on advancing vehicle braking systems. Haraikawa's innovations have significantly contributed to automotive safety and technology.

Latest Patents

Among his latest patents is a **braking device for use in vehicles**, which features an anti-skid braking mechanism. This device utilizes a moderator to control the braking force supplied to the vehicle wheel during specific acceleration conditions, ensuring optimized performance and enhanced safety. Another notable patent is a **vehicle braking system** that incorporates a pneumatic booster. This system consists of a shell casing, a flexible diaphragm, and a control mechanism that responds to operational conditions, allowing for precise control over the braking force applied to the vehicle.

Career Highlights

Haraikawa has made remarkable strides in his career with Tokico, Ltd., where he has played a critical role in the development of braking technologies. His inventions have not only advanced the company's product offerings but also have set new benchmarks in the automotive industry.

Collaborations

Throughout his career, Tetsuo Haraikawa has collaborated with fellow innovators, including Koichi Tamura and Yoshihiro Hayashida. Together, they have contributed to pioneering advancements in vehicle technology, combining their expertise to enhance the safety and efficiency of braking systems.

Conclusion

Tetsuo Haraikawa's extensive contributions to vehicle braking technology reflect his dedication to innovation and safety in the automotive sector. His patents continue to influence the design and performance of braking systems, showcasing the importance of inventive minds in driving technological progress.

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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