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For the Inventor, By the Inventor

Shiki, Japan

Yoshiaki Hirosawa

USPTO Granted Patents = 18

Average Co-Inventor Count = 3.4

ph-index = 11

Forward Citations = 298(Granted Patents)


Location History:

  • Tokyo, JA (1976 - 1977)
  • Shiki, JP (1985 - 1989)
  • Saitama, JP (1984 - 1990)

Company Filing History:

goldMedal18 out of 10,092 
 
Honda Giken Kogyo Kabushiki Kaisha
 patents
silverMedal5 out of 29 
 
New Nippon Electric Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1976-1990

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18 patents (USPTO):Explore Patents
1. 4923028 - Reverse driving device for an autobicycle (1990-05-08),
2. 4917056 - Valve operation control system in internal combustion engine (1990-04-17),
3. 4869332 - Reverse drive for small vehicles (1989-09-26),
4. 4846128 - Ignition timing control system for internal combustion engine (1989-07-11),
5. 4763538 - Reverse drive for small vehicles (1988-08-16),
6. 4748952 - Ignition timing control system for internal combustion engine (1988-06-07),
7. 4745902 - Ignition timing control method for internal combustion engine (1988-05-24),
8. 4741310 - Ignition timing control system for internal combustion engine (1988-05-03),
9. 4694799 - Ignition timing control system for internal combustion engines (1987-09-22),
10. 4502441 - Input/output unit modifiable engine ignition control apparatus (1985-03-05),
11. 4499875 - Control unit modifiable engine ignition control apparatus (1985-02-19),
12. 4494518 - Engine ignition interpolation apparatus (1985-01-22),
13. 4485784 - An engine ignition control circuit having a failsafe for a crank angle (1984-12-04),
14. 4457286 - Engine ignition system (1984-07-03),
15. 4027640 - Automatic choke valve apparatus in an internal combustion engine (1977-06-07),

Title: Yoshiaki Hirosawa: Innovator in Automotive Technology

Introduction

Yoshiaki Hirosawa is a prominent inventor based in Shiki, Japan. He has made significant contributions to the field of automotive technology, holding a total of 18 patents. His innovative designs and systems have advanced the functionality and efficiency of various vehicles.

Latest Patents

One of Hirosawa's latest patents is a reverse driving device for an autobicycle. This device allows an autobicycle to be reversely driven by a dedicated reverse driving motor, which can be selectively connected or disconnected to the rear wheel. This arrangement is particularly beneficial for retrofitting existing autobicycles that are designed for powered movement only in the forward direction. Another notable patent is a valve operation control system in an internal combustion engine. This system includes an engine valve that is supported on the engine body and a valve spring that biases the engine valve in a closing direction. The valve driving means transmits a force from a valve-operating cam to the engine valve, allowing for precise control of the valve's opening and closing based on the engine's operational conditions.

Career Highlights

Throughout his career, Hirosawa has worked with notable companies, including Honda Motor Co., Ltd. and New Nippon Electric Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to advancements in automotive technology.

Collaborations

Hirosawa has collaborated with several talented individuals in his field, including Shizuo Yagi and Makoto Kawai. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Yoshiaki Hirosawa's contributions to automotive technology through his patents and collaborations highlight his role as a leading inventor in the industry. His innovative solutions continue to influence the design and functionality of vehicles today.

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