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For the Inventor, By the Inventor

Okazaki, Japan

Yutaka Kawashima

USPTO Granted Patents = 13

Average Co-Inventor Count = 4.4

ph-index = 8

Forward Citations = 238(Granted Patents)


Location History:

  • Okazaki, JA (1976 - 1978)
  • Okazaki, JP (1980 - 1988)
  • Hiroshima, JP (1989)

Company Filing History:

goldMedal13 out of 3,252 
 
Nippondenso Co., Ltd.
 patents
silverMedal5 out of 1,600 
 
Nippon Soken, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1976-1989

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13 patents (USPTO):Explore Patents
1. 4869225 - Fuel supply device for vehicles (1989-09-26),
2. 4784587 - Pump apparatus (1988-11-15),
3. 4550701 - Air-fuel ratio control in an internal combustion engine (1985-11-05),
4. 4503824 - Method and apparatus for controlling air-fuel ratio in an internal (1985-03-12),
5. 4455981 - Method and system for control of air-fuel ratio (1984-06-26),
6. 4399698 - Gas flow measuring apparatus (1983-08-23),
7. 4268910 - Method for controlling timing of spark ignition for an internal (1981-05-19),
8. 4245602 - Ignition timing control method for internal combustion engine (1981-01-20),
9. 4243008 - Method for controlling ignition timing of internal combustion engine (1981-01-06),
10. 4240388 - Method for controlling timing of spark ignition for an internal (1980-12-23),
11. 4233944 - Method for controlling ignition timing of internal combustion engine (1980-11-18),
12. 4087966 - Exhaust gas cleaning device (1978-05-09),
13. 3937015 - Pleated filter in the exhaust manifold (1976-02-10),

Title: Yutaka Kawashima: Innovator in Fuel Supply Technology

Introduction

Yutaka Kawashima is a prominent inventor based in Okazaki, Japan. He has made significant contributions to the field of fuel supply devices for vehicles, holding a total of 13 patents. His innovative designs have improved the efficiency and functionality of fuel systems in modern vehicles.

Latest Patents

One of Kawashima's latest patents is a fuel supply device for vehicles. This device features a sub-tank arranged within a fuel tank, equipped with at least one intake port in the bottom wall of the sub-tank. A check valve is positioned at the intake port, and a fuel pump is located within the sub-tank to supply fuel to the engine. Additionally, a fuel return pipe allows a portion of the supplied fuel to return to the sub-tank. A jet pump is connected to the fuel return pipe, utilizing the fluid energy of the returned fuel to deliver fuel from the tank into the sub-tank. The design includes a groove forming a flat fluid control device situated between the fuel pump and the bottom wall of the sub-tank, enhancing the overall efficiency of the fuel supply system.

Another notable invention is a pump apparatus that consists of a pump housing and an impeller with multiple radial grooves. This impeller is rotatably disposed within the pump housing and defines first and second fluid passages on either side. The apparatus is driven by a motor with an output shaft, featuring specific radial clearances that optimize performance.

Career Highlights

Kawashima has worked with notable companies such as Nippondenso Co., Ltd. and Nippon Soken, Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas in fuel supply technology.

Collaborations

Throughout his career, Kawashima has collaborated with talented individuals, including Masakazu Ninomiya and Norio Omori. These partnerships have contributed to the advancement of his inventions and the successful implementation of his designs.

Conclusion

Yutaka Kawashima is a distinguished inventor whose work in fuel supply technology has made a significant impact on the automotive industry. His innovative patents and collaborations reflect his commitment to enhancing vehicle performance and efficiency.

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