Company Filing History:

14 out of 42,485

Hitachi, Ltd.

patents

4 out of 152

Hitachi Automotive Engineering Co., Ltd.

patents

1 out of 248

Hitachi Car Engineering Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 1988-2006

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14 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7021569 - Fuel injection valve (2006-04-04),

2. 6976381 - Fuel injector, nozzle body, and manufacturing method of cylindrical part equipped with fluid passage (2005-12-20),

3. 6918548 - Electronic fuel injector (2005-07-19),

4. 6710745 - High-frequency communication apparatus and method of manufacturing the same (2004-03-23),

5. 6580395 - High-frequency communication apparatus and method of manufacturing the same (2003-06-17),

6. 5346137 - Electromagnetic fuel injection valve (1994-09-13),

7. 5239751 - Method of producing nozzle for solenoid valve (1993-08-31),

8. 5156341 - Electromagnetic type fuel injection valve (1992-10-20),

9. 5127156 - Method for concentrically assembling a pair of cylindrical members and (1992-07-07),

10. 5109823 - Fuel injector device and method of producing the same (1992-05-05),

11. 5040731 - Electromagnetic fuel injection and method of producing the same (1991-08-20),

12. 5012982 - Electromagnetic fuel injector (1991-05-07),

13. 4974312 - Method of producing an electromagnetic fuel injector (1990-12-04),

14. 4756362 - Heat exchanger (1988-07-12),

Title: Mizuho Yokoyama: Innovator in Fuel Injection Technology

Introduction

Mizuho Yokoyama is a prominent inventor based in Katsuta, Japan, known for his significant contributions to fuel injection technology. With a total of 14 patents to his name, Yokoyama has made remarkable advancements in the design and functionality of fuel injectors.

Latest Patents

Yokoyama's latest patents include innovative designs for fuel injection valves. One notable patent describes a fuel swirler positioned upstream of an injection orifice, which is integrated into the nozzle body of a fuel injector. This design features a fixed core coupled to the nozzle body via a non-magnetic cylindrical seal ring, enhancing the precision of fuel delivery. The inner circumference of the fuel swirler and the seal ring guide the needle's stroke movement, ensuring efficient fuel flow through an annular passage. Another patent focuses on the manufacturing method of cylindrical parts equipped with fluid passages, specifically for fuel injectors. This method utilizes martenstic stainless steel to improve productivity and reliability during the manufacturing process.

Career Highlights

Throughout his career, Mizuho Yokoyama has worked with notable companies such as Hitachi, Ltd. and Hitachi Automotive Engineering Co., Ltd. His experience in these organizations has allowed him to refine his expertise in fuel injection systems and contribute to the automotive industry.

Collaborations

Yokoyama has collaborated with talented individuals in his field, including Hisanobu Kanamaru and Atsushi Koshizaka. These partnerships have fostered innovation and the development of advanced technologies in fuel injection.

Conclusion

Mizuho Yokoyama's work in fuel injection technology exemplifies his dedication to innovation and engineering excellence. His patents and career achievements highlight his significant impact on the automotive industry.

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