Company Filing History:

10 out of 382

Zexel Gmbh

patents

3 out of 596

Diesel Kiki Co., Ltd.

patents

1 out of 1,625

Mitsubishi Jidosha Kogyo Kabushiki Kaisha

patents

where one patent can have more than one assignee

Years Active: 1988-1999

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13 patents (USPTO):Sort by Forward Citations

Abstract keywords

1. 5915360 - Spill control apparatus for fuel injection system (1999-06-29),

2. 5647323 - Fuel injection system (1997-07-15),

3. 5642715 - Distributor type fuel injection pump (1997-07-01),

4. 5617830 - Prestroke controller for engine fuel injection pump (1997-04-08),

5. 5592915 - Pilot injection controller in fuel injection system and method of (1997-01-14),

6. 5566921 - Solenoid valve (1996-10-22),

7. 5482016 - Pilot injection control system (1996-01-09),

8. 5460132 - Fuel injection pump and prestroke controller therefor (1995-10-24),

9. 5443047 - Fuel injection system (1995-08-22),

10. 5357933 - Fuel injection device (1994-10-25),

11. 5080564 - Prestroke control device for fuel injection pumps (1992-01-14),

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

13. 4730586 - Fuel injection apparatus for internal combustion engines (1988-03-15),

Title: **Hiroshi Ishiwata: Innovator in Fuel Injection Systems**

Introduction

Hiroshi Ishiwata, an inventor from Higashimatsuyama, Japan, has made significant contributions to the field of fuel injection technology. With a portfolio of 13 patents, his innovations aim to enhance the efficiency and reliability of fuel injection systems used in various automotive applications.

Latest Patents

Among his latest inventions is a spill control apparatus for a fuel injection system. This mechanism involves a sleeve fitted externally to a rotor, allowing for precise adjustments of the communication timing between the rotor and the sleeve. The rotor features a cleverly designed port with both first and second indented portions that optimize spill characteristics while reducing the risk of dust entry, thereby minimizing wear and preventing seizure.

Additionally, Ishiwata has developed a fuel injection system that integrates a control sleeve with a timer piston. This innovative linkage allows for pre-stroke control without the need for additional actuators, showcasing his ability to create simple yet effective mechanical structures.

Career Highlights

Throughout his career, Ishiwata has worked with prominent companies in the automotive industry, including Zexel GmbH and Diesel Kiki Co., Ltd. His experience in these organizations has played a crucial role in his development as an inventor, enabling him to apply his theoretical knowledge to practical solutions.

Collaborations

Ishiwata's work has also involved collaboration with talented professionals such as Susumu Yamaguchi and Takashi Ohishi. These partnerships have fostered innovation and allowed for sharing of expertise, further driving the advancements in fuel injection technology.

Conclusion

Hiroshi Ishiwata's dedication to innovation in fuel injection systems has led to impactful contributions in the automotive sector. His 13 patents reflect his commitment to enhancing performance and reliability, making him a noteworthy figure in the realm of engineering and invention.

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