Mamoru Niimi

This inventor holds 8 USPTO granted patents. Top assignees: Aisin Aw Co., Ltd., Toyota Jidosha Kabushiki Kaisha. Active years: 1990-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Mamoru Niimi. Retrieved from https://idiyas.com/inventor/mamoru-niimi

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 = 6.4

ph-index = 6

Forward Citations = 112(Granted Patents)

Location History:

Handa, JP (1990 - 1991)
Hanada, JP (1995)
Anjo, JP (1996)

Company Filing History:

Toyota Jidosha Kabushiki Kaisha

patents

where one patent can have more than one assignee

Years Active: 1990-1996

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5527233 - Hydraulic control apparatus for controlling an engaging state of a (1996-06-18),

2. 5496230 - Control system for automatic transmission (1996-03-05),

3. 5472389 - Hydraulic control system for automatic transmission (1995-12-05),

4. 5006102 - Floating structure for interconnecting three clutches with a single (1991-04-09),

5. 4957195 - Hydraulic device for an automatic transmission (1990-09-18),

6. 4934218 - Hydraulic control device for an automatic transmission (1990-06-19),

7. 4911000 - Rotation detecting device of an automatic transmission (1990-03-27),

8. 4903798 - Hydraulic apparatus for an automatic transmission (1990-02-27),

Title: Mamoru Niimi: Innovator in Hydraulic Control Systems

Introduction

Mamoru Niimi is a distinguished inventor based in Handa, Japan, known for his contributions to hydraulic control systems in automotive technology. With a total of eight patents to his name, Niimi has made significant advancements in the field of automatic transmissions.

Latest Patents

One of his latest patents is a hydraulic control apparatus designed for controlling the engaging state of a lock-up clutch in an automatic transmission of a motor vehicle. This innovative apparatus includes a lock-up clutch switching valve device that can selectively place the lock-up clutch in fully released, partially engaged, or fully engaged states. Additionally, it features a hydraulic pressure producing device, an abnormality detecting device, and a control device that responds to detected abnormalities by managing hydraulic pressure application to the lock-up clutch.

Career Highlights

Throughout his career, Mamoru Niimi has worked with prominent companies in the automotive industry, including Aisin Aw Co., Ltd. and Toyota Motor Corporation. His expertise in hydraulic systems has positioned him as a key figure in the development of advanced automotive technologies.

Collaborations

Niimi has collaborated with notable colleagues such as Takenori Kano and Haruki Takemoto, contributing to various projects that enhance the functionality and reliability of automotive systems.

Conclusion

Mamoru Niimi's innovative work in hydraulic control systems has significantly impacted the automotive industry. His patents reflect a commitment to improving vehicle performance and safety through advanced technology.

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]