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For the Inventor, By the Inventor

Aichi, Japan

Toshimi Matsumura

This inventor holds 17 USPTO granted patents, primarily in Fuel Injection Systems. Top assignee: Nippondenso Co., Ltd.. Active years: 1982-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshimi Matsumura. Retrieved from https://idiyas.com/inventor/toshimi-matsumura

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

Calculating rank
USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 2.8

ph-index = 11

Forward Citations = 322(Granted Patents)


Location History:

  • Ohbu, JP (1982 - 1984)
  • Obu, JP (1984)
  • Oobu, JP (1984)
  • Aichi, JP (1984 - 1994)

Company Filing History:

goldMedal17 out of 3,252 
 
Nippondenso Co., Ltd.
 patents

Years Active: 1982-1994

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Areas of Expertise:
Common-Rail Injection
Atmospheric Pressure Estimation
Fuel Injection Control
Ignition Timing Compensation
Internal Combustion Engine
Air-Fuel Ratio Control
Idle Speed Control
Fuel Injection Pump
Cylinder Distribution
Closed Loop Control
Learning Data
17 patents (USPTO):Explore Patents
1. 5277156 - Common-rail fuel injection system for an engine (1994-01-11),
2. 4814997 - Method and apparatus for estimating an atmospheric pressure based on an (1989-03-21),
3. 4705000 - Apparatus and method for controlling amount of fuel injected into engine (1987-11-10),
4. 4671236 - Intake air density compensation on the basis of ignition timing for (1987-06-09),
5. 4667634 - Method and apparatus for controlling amount of fuel injected into engine (1987-05-26),
6. 4590563 - Method and apparatus for controlling internal combustion engine (1986-05-20),
7. 4573442 - Fuel injection pump having a compact spill-port timing control unit (1986-03-04),
8. 4503821 - Apparatus and method for controlling amount of fuel injected into engine (1985-03-12),
9. 4499883 - Distributor type fuel-injection pump for distributing fuel to cylinders (1985-02-19),
10. 4495920 - Engine control system and method for minimizing cylinder-to-cylinder (1985-01-29),
11. 4492534 - Fuel injection pump for internal combustion engine (1985-01-08),
12. 4475507 - Fuel injection amount control (1984-10-09),
13. 4467770 - Method and apparatus for controlling the air-fuel ratio in an internal (1984-08-28),
14. 4467769 - Closed loop air/fuel ratio control of i.c. engine using learning data (1984-08-28),
15. 4446832 - Method and system for controlling the idle speed of an internal (1984-05-08),

Title: Innovations of Toshimi Matsumura

Introduction

Toshimi Matsumura is a prominent inventor based in Aichi, Japan, known for his significant contributions to engine technology. With a total of 17 patents to his name, Matsumura has made remarkable advancements in fuel injection systems and atmospheric pressure estimation methods.

Latest Patents

One of Matsumura's latest patents is a common-rail fuel injection system for an engine. This innovative system includes a fuel injection device that injects high-pressure fuel from a common rail into the engine. It features a pumping chamber connected to the common rail and a fuel feed device that supplies fuel to the pumping chamber. The design incorporates a plunger that moves in accordance with the engine's output shaft rotation, defining part of the pumping chamber. A relief valve selectively returns fuel from the pumping chamber to a low-pressure side, while a valve closing device controls the relief valve's operation. This system enhances fuel delivery efficiency and engine performance.

Another notable patent is a method and apparatus for estimating atmospheric pressure without the need for an atmospheric pressure sensor. This system utilizes a single pressure sensor to measure air pressure in the intake manifold of a fuel-injected engine. The control unit adjusts the fuel amount and injection timing based on various engine parameters. By estimating the intake pressure at a specific time, the system can provide a more accurate atmospheric pressure reading, improving overall engine operation.

Career Highlights

Matsumura has dedicated his career to advancing automotive technology, particularly in fuel injection systems. His work at Nippondenso Co., Ltd. has positioned him as a key figure in the industry, contributing to innovations that enhance engine efficiency and performance.

Collaborations

Throughout his career, Matsumura has collaborated with notable colleagues, including Akira Masuda and Masahiko Miyaki. These partnerships have fostered a creative environment that has led to groundbreaking advancements in engine technology.

Conclusion

Toshimi Matsumura's contributions to engine technology through his patents and innovations have significantly impacted the automotive industry. His work continues to inspire advancements in fuel injection systems and atmospheric pressure estimation methods.

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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