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For the Inventor, By the Inventor

Katsuta, Japan

Yoshishige Ohyama

USPTO Granted Patents = 39

Average Co-Inventor Count = 3.5

ph-index = 16

Forward Citations = 641(Granted Patents)


Location History:

  • Katsuta, JP (1979 - 1999)
  • Hitachinaka, JP (1999 - 2003)

Company Filing History:

goldMedal39 out of 42,485 
 
Hitachi, Ltd.
 patents

Years Active: 1979-2003

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39 patents (USPTO):Explore Patents
1. 6516264 - Control apparatus for drive system (2003-02-04),
2. 6298300 - Control apparatus for drive system composed of engine and transmission (2001-10-02),
3. RE37269 - Air intake arrangement for internal combustion engine (2001-07-10),
4. 6248040 - Engine system and engine control method (2001-06-19),
5. 6058348 - Control apparatus for drive system composed of engine and transmission (2000-05-02),
6. 6000378 - Change gear control device using acceleration and gear ratio as (1999-12-14),
7. 5894724 - Engine system and engine control method (1999-04-20),
8. 5813387 - Change gear control device using acceleration and gear ratio as (1998-09-29),
9. 5746679 - Method and apparatus for controlling driving power of motor vehicle (1998-05-05),
10. 5643133 - Change gear control device using acceleration and gear ratio as (1997-07-01),
11. 5603673 - Change gear control device using acceleration and gear ratio as (1997-02-18),
12. 5580330 - Method and apparatus for controlling driving power of motor vehicle (1996-12-03),
13. 5533329 - Control apparatus for and control method of gas turbine (1996-07-09),
14. 5522357 - Apparatus and method of fuel injection and ignition of internal (1996-06-04),
15. 5496227 - Torque control method and apparatus for internal combustion engine and (1996-03-05),

Title: Innovator of Advanced Drive Systems: Yoshishige Ohyama

Introduction: Yoshishige Ohyama is a distinguished inventor hailing from Katsuta, Japan, recognized for his significant contributions to the field of automotive technology. With a remarkable portfolio of 39 patents, Ohyama is at the forefront of developing innovative control systems that enhance vehicle performance while reducing harmful emissions.

Latest Patents: Ohyama's latest patents include two notable inventions related to control apparatus for drive systems. These inventions focus on a drive system composed of an engine and transmission, controlled accurately based on desired wheel torque corresponding to accelerator position and current vehicle speed. By determining the transmission's speed ratio with consideration of torque factors, including the air-fuel ratio on the engine side, Ohyama's approach optimizes control, aiming to reduce NOx emissions while enhancing acceleration performance and fuel economy.

Career Highlights: Yoshishige Ohyama works at Hitachi, Ltd., a leading global technology company. His expertise in vehicular control systems has established him as a key figure in automotive innovation, delivering solutions that not only improve drivability but also promote environmental sustainability through reduced emissions.

Collaborations: Throughout his career, Ohyama has collaborated with esteemed colleagues such as Toshimichi Minowa and Minoru Ohsuga. Together, they have contributed to advancements in automotive engineering, striving for excellence in the design and functionality of drive systems.

Conclusion: Yoshishige Ohyama's work exemplifies the spirit of innovation in the automotive industry. With a focus on reducing emissions and enhancing vehicle performance, his extensive patent portfolio showcases the critical role inventors play in creating sustainable technological solutions. As he continues to push the boundaries of vehicular technology at Hitachi, the impact of his work will undoubtedly shape the future of automotive engineering.

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