Hisashi Nakamura

This inventor holds 17 USPTO granted patents, primarily in Fuel Injection Technology. Top assignees: Diesel Kiki Co., Ltd., Zexel Gmbh. Active years: 1983-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisashi Nakamura. Retrieved from https://idiyas.com/inventor/hisashi-nakamura-h4hipm5a

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 = 1.9

ph-index = 8

Forward Citations = 121(Granted Patents)

Location History:

Matsuyama, JP (1983 - 1984)
Saitama, JP (1990 - 1992)
Higashi-Matsuyama, JP (1983 - 1998)

Company Filing History:

11 out of 596

Diesel Kiki Co., Ltd.

Years Active: 1983-1998

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Areas of Expertise:

Fuel Injection Pump

Timing Control

Variable Flow Rate

Distributor Type

Internal Combustion

Pressure Equalizer

Sealing Device

Injection Compensator

Multi-Cylinder Engines

Delivery Valve

Injection Timing

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5746584 - Inner cam type fuel injection pump having modified plungers (1998-05-05),

2. 5513965 - Distributor-type fuel injection pump (1996-05-07),

3. 5462032 - Fuel injection timing control device and method for internal combustion (1995-10-31),

4. 5165851 - Fuel injection pump (1992-11-24),

5. 5125802 - Injection timing control apparatus for distributor type fuel injection (1992-06-30),

6. 5115783 - Method for varying the flow rate of fuel in a distributor-type (1992-05-26),

7. 5000668 - Distribution-type fuel injection pump (1991-03-19),

8. 4977882 - Distributor type fuel injection pump (1990-12-18),

9. 4953589 - Sealing device of delivery valve for fuel injection units (1990-09-04),

10. 4926902 - Pressure equalizer valve device of fuel injection pump (1990-05-22),

11. 4737086 - Fuel injection pump having variable prestroke mechanism (1988-04-12),

12. 4664079 - Fuel injection system for internal combustion engines (1987-05-12),

13. 4661051 - Fuel injection pump with adjustable timing (1987-04-28),

14. 4508080 - Injection quantity correcting device for distribution type fuel (1985-04-02),

15. 4449500 - Injection compensator for fuel injection pump (1984-05-22),

Title: Hisashi Nakamura: Innovator in Fuel Injection Technology

Introduction

Hisashi Nakamura is a prominent inventor known for his significant contributions to fuel injection technology. He is based in Higashimatsuyama, Japan, and holds a total of 17 patents in this field. His innovative designs have greatly influenced the efficiency and reliability of fuel injection systems.

Latest Patents

Nakamura's latest patents include the "Inner cam type fuel injection pump having modified plungers." This invention features a unique design where the side surface of the protruding portion of each plunger is shaped to prevent collisions and deformation, ensuring smooth operation without sliding failures. Another notable patent is the "Distributor-type fuel injection pump," which incorporates a cam ring and sliding sleeves to achieve stable injection timing control. These advancements demonstrate his commitment to enhancing fuel injection performance.

Career Highlights

Throughout his career, Nakamura has worked with notable companies such as Diesel Kiki Co., Ltd. and Zexel GmbH. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in fuel injection systems.

Collaborations

Nakamura has collaborated with esteemed colleagues, including Kenichi Kubo and Noriyuki Abe. Their combined expertise has fostered a creative environment that has led to the development of advanced fuel injection technologies.

Conclusion

Hisashi Nakamura's work in fuel injection technology has made a lasting impact on the industry. His innovative patents and collaborations highlight his dedication to improving engine performance and efficiency.

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]