Company Filing History:

16 out of 13,395

Nissan Motor Company Limited

where one patent can have more than one assignee

Years Active: 1982-1993

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16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5184577 - Running state control system for motor vehicle (1993-02-09),

2. 5152267 - Variable cam engine (1992-10-06),

3. 5146888 - Idle engine speed control apparatus (1992-09-15),

4. 5143037 - Variable cam engine (1992-09-01),

5. 5140961 - System and method for self diagnosing an engine control system (1992-08-25),

6. 5080068 - Fuel supply control system for internal combustion engine (1992-01-14),

7. 5050083 - System and method for controlling air/fuel mixture ratio for internal (1991-09-17),

8. 4750103 - System and method for detecting and controlling knocking in an internal (1988-06-07),

9. 4602506 - Combustion pressure sensor arrangement (1986-07-29),

10. 4556029 - Back-up system and method for engine coolant temperature sensor in (1985-12-03),

11. 4543934 - Air/fuel ratio control system for internal combustion engine and method (1985-10-01),

12. 4495921 - Electronic control system for an internal combustion engine controlling (1985-01-29),

13. 4483294 - Engine control system (1984-11-20),

14. 4450814 - Air-fuel ratio control apparatus and method for an internal combustion (1984-05-29),

15. 4438748 - Method of supplying fuel to an internal combustion engine during start-up (1984-03-27),

Title: The Innovations of Kunifumi Sawamoto: A Pioneer in Automotive Technology

Introduction

Kunifumi Sawamoto, an accomplished inventor based in Yokosuka, Japan, has made significant contributions to the automotive industry with his innovative ideas and inventions. With a remarkable total of 16 patents to his name, Sawamoto has focused on developing advanced technologies aimed at improving vehicle performance and efficiency.

Latest Patents

Among his latest patents, two stand out for their potential impact on motor vehicle functionality. The first is the "Running State Control System for Motor Vehicle," which features an engine output torque control mechanism, shift detecting means, and a valve timing control system (VTC). This inventive system enhances vehicle performance by adjusting engine torque during shifting and managing braking torque in response to traction loss or skidding.

The second notable invention is the "Variable Cam Engine," designed to optimize engine performance. This engine utilizes cams that rotate in sync with engine revolutions, offering two distinct operating modes: a power cam for high torque and an economy cam for improved fuel efficiency. The cam change-over mechanism intelligently transitions between modes while ensuring that the torque output remains consistent, thus preventing any detrimental effects on performance or exhaust composition.

Career Highlights

Throughout his career, Kunifumi Sawamoto has been associated with prominent companies in the automotive sector, including Nissan Motor Company Limited and Hitachi, Ltd. His work in these organizations has not only honed his skills as an inventor but has also enabled him to contribute to cutting-edge technologies that enhance vehicle design and efficiency.

Collaborations

Sawamoto has collaborated with notable professionals such as Tatsuo Morita and Kenji Ikeura, who have worked alongside him to bring several of his innovative ideas to fruition. These partnerships demonstrate the collaborative spirit inherent in the field of automotive engineering, fostering a creative environment where new inventions can emerge and thrive.

Conclusion

Kunifumi Sawamoto's contributions to the automotive industry through his 16 patents underscore his status as a leading inventor in the field. His innovative solutions, particularly in torque control and engine efficiency, reflect a commitment to advancing automotive technology. As the industry continues to evolve, Sawamoto's inventions will likely play a pivotal role in shaping the future of motor vehicles.

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