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For the Inventor, By the Inventor

Obu, Japan

Hiromi Hasegawa

This inventor holds 15 USPTO granted patents. Top assignees: Aisin Seiki Kabushiki Kaisha, Toyota Jidosha Kabushiki Kaisha. Active years: 1983-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiromi Hasegawa. Retrieved from https://idiyas.com/inventor/hiromi-hasegawa

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

Calculating rank
USPTO Granted Patents = 15

% Patents Active = 100.0

Average Co-Inventor Count = 2.3

ph-index = 7

Forward Citations = 110(Granted Patents)


Location History:

  • Nagoya, JP (1983 - 1984)
  • Oobu, JP (1989)
  • Aichi, JP (1988 - 1990)
  • Obucity, JP (1990)
  • Obu, JP (1986 - 1992)

Company Filing History:

goldMedal15 out of 5,207 
 
Aisin Seiki Kabushiki Kaisha
 patents
silverMedal3 out of 38,970 
 
Toyota Jidosha Kabushiki Kaisha
 patents
where one patent can have more than one assignee

Years Active: 1983-1992

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15 patents (USPTO):Explore Patents
1. 5090540 - Shift range device for automatic transmission (1992-02-25),
2. 5032993 - Control for an automatic transmission (1991-07-16),
3. 4972740 - Hydraulic control circuit for automatic transmission (1990-11-27),
4. 4944193 - Automatic transmission with a power take-off mechanism (1990-07-31),
5. 4924982 - Oil pressure clutch mechanism for an automatic transmission (1990-05-15),
6. 4880091 - Control circuit for fluid coupling with lock-up clutch (1989-11-14),
7. 4870877 - Hydraulic control circuit for automatic transmission (1989-10-03),
8. 4843909 - Automatic transmission control method (1989-07-04),
9. 4828084 - Control circuit for fluid coupling with high-gear clutch (1989-05-09),
10. 4768396 - Rotary cam assembly (1988-09-06),
11. 4733581 - Automatic transmission provided with mode preventing increase in oil (1988-03-29),
12. 4651773 - Throttle valve assembly (1987-03-24),
13. 4606242 - Parking device (1986-08-19),
14. 4462278 - Transmission for vehicles (1984-07-31),
15. 4377095 - Speed change gear system (1983-03-22),

Title: The Innovative Journey of Hiromi Hasegawa

Introduction

Hiromi Hasegawa, an esteemed inventor based in Obu, Japan, has made significant contributions to the field of automotive technology. With a remarkable portfolio of 15 patents, Hasegawa's ingenuity has paved the way for advancements in automatic transmission systems, enhancing the driving experience for many.

Latest Patents

Among Hasegawa's latest innovations is the "Shift Range Device for Automatic Transmission." This invention features a shift lever that can be shifted to various positions, including a first neutral range, a reverse range, a second neutral range, and multiple drive ranges, organized in a specified order. The device also includes a neutral mechanism that incorporates a manual valve, which effectively prevents oil pressure from reaching specific frictional elements in the transmission when the lever is adjusted to the neutral positions.

Another notable patent is the "Control for an Automatic Transmission," which improves transmission control by monitoring engine rpm post-downshift. The system compares the engine speed with a predetermined threshold. If the detected speed is below this threshold, the solenoids responsible for the downshift remain energized. However, if the speed surpasses the set value, the solenoids are deactivated to avoid engine overrunning.

Career Highlights

Hasegawa has had an impressive career, working with notable companies such as Aisin Seiki Kabushiki Kaisha and Toyota Motor Corporation. His experiences in these prestigious organizations have significantly influenced his development as an inventor, allowing him to apply his skills to practical automotive solutions.

Collaborations

Throughout his career, Hiromi Hasegawa has collaborated with prominent colleagues, including Toshiaki Ishiguro and Yoshinobu Iwase. These partnerships have fostered a creative environment that has played a crucial role in his innovative projects and contributions to the automotive industry.

Conclusion

Hiromi Hasegawa's journey as an inventor reflects his dedication to advancing automotive technology. Through his innovative patents and collaborations, he continues to make a lasting impact on the industry, inspiring future generations of inventors.

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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