Company Filing History:

9 out of 42,485

Hitachi, Ltd.

patents

2 out of 152

Hitachi Automotive Engineering Co., Ltd.

patents

where one patent can have more than one assignee

Years Active: 1994-2007

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9 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7231901 - Direct-injection engine, method of controlling the same, piston used in the same and fuel injection valve used in the same (2007-06-19),

2. RE37269 - Air intake arrangement for internal combustion engine (2001-07-10),

3. 6092503 - Air intake equipment for internal combustion engine (2000-07-25),

4. 5829408 - Internal combustion engine and air-fuel mixture supply apparatus therefor (1998-11-03),

5. 5718195 - Intake pipe for internal combustion engine (1998-02-17),

6. 5617824 - Air intake equipment for internal combustion engine (1997-04-08),

7. 5572965 - Intake pipe for internal combustion engine (1996-11-12),

8. 5404717 - Method and system for controlling internal combustion engine with air (1995-04-11),

9. 5325828 - Air intake arrangement for internal combustion engine (1994-07-05),

Title: Jun'ichi Yamaguchi: Innovator in Engine Technology

Introduction

Jun'ichi Yamaguchi is a prominent inventor based in Hitachinaka, Japan. He has made significant contributions to the field of engine technology, holding a total of nine patents. His innovative work focuses on improving the efficiency and performance of internal combustion engines.

Latest Patents

Yamaguchi's latest patents include a direct-injection engine and methods for controlling it. One notable invention features an injector with three concentrated fuel spray bands. This design directs one spray band towards a spark plug while the others target curved grooves on a piston. The sprays that enter each groove collide under the spark plug, creating a stable and satisfactory stratified combustion. Another patent involves an air intake arrangement for internal combustion engines, which includes a main air intake conduit and independent branching passages for each engine cylinder. This arrangement is designed to optimize airflow and enhance engine performance.

Career Highlights

Throughout his career, Jun'ichi Yamaguchi has worked with notable companies such as Hitachi, Ltd. and Hitachi Automotive Engineering Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in engine technology.

Collaborations

Yamaguchi has collaborated with several talented individuals in his field, including Minoru Ohsuga and Ryoichi Komuro. These partnerships have contributed to the advancement of his inventions and the overall progress in engine technology.

Conclusion

Jun'ichi Yamaguchi is a distinguished inventor whose work in engine technology has led to significant advancements. His innovative patents and collaborations reflect his commitment to improving engine performance and efficiency.

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