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For the Inventor, By the Inventor

Hiroshima, Japan

Hiroyuki Yamashita

USPTO Granted Patents = 33


Average Co-Inventor Count = 3.8

ph-index = 11

Forward Citations = 296(Granted Patents)


Location History:

  • Hiroshima-ken, JP (2000)
  • Fuchu-cho, JP (2001 - 2006)
  • Hiroshima, JP (1993 - 2018)
  • Hirohshima, JP (2019)
  • Aki-gun, JP (2004 - 2021)

Company Filing History:

goldMedal33 out of 4,683 
 
Mazda Motor Corporation
 patents

Years Active: 1993-2021

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33 patents (USPTO):Explore Patents
1. 11208968 - Engine system (2021-12-28),
2. 10208712 - Control system of engine (2019-02-19),
3. 10132273 - Control system of engine (2018-11-20),
4. 10119492 - Fuel injection control device for direct-injection engine (2018-11-06),
5. 10024274 - Control apparatus of engine (2018-07-17),
6. 9915230 - Engine system (2018-03-13),
7. 9874173 - Control device for direct injection gasoline engine (2018-01-23),
8. 9863372 - Control apparatus of premixed charge compression ignition engine (2018-01-09),
9. 9816445 - Device for controlling direct-injection gasoline engine (2017-11-14),
10. 9638146 - Gasoline direct-injection engine (2017-05-02),
11. 9624820 - Control device for direct injection gasoline engines (2017-04-18),
12. 9599058 - Control device of gasoline direct-injection engine (2017-03-21),
13. 9546617 - Gasoline direct-injection engine (2017-01-17),
14. 9488094 - Direct injection gasoline engine and method of controlling the direct injection gasoline engine (2016-11-08),
15. 8417437 - Control method and system of engine (2013-04-09),

Title: Innovations by Hiroyuki Yamashita: A Leader in Engine Technology

Introduction

Hiroyuki Yamashita, a remarkable inventor based in Hiroshima, Japan, has made significant contributions to the field of engine technology. With an impressive portfolio of 33 patents, he has earned recognition for his innovative designs and systems that optimize engine performance and efficiency.

Latest Patents

Yamashita's latest patents include a sophisticated engine system designed to enhance combustion efficiency. This system features a main combustion chamber, an auxiliary chamber, an injector for fuel, and an ignition plug for mixture gas ignition. Notably, the control device regulates the air-fuel ratio depending on engine load ranges, ensuring optimal performance.

Another noteworthy invention is a control system for engines. This system utilizes a water injector to introduce supercritical or subcritical water into the engine cylinder. The controller manages the timing and amount of water injected, particularly during high engine speed operations, to improve combustion efficiency and reduce emissions.

Career Highlights

Hiroyuki Yamashita plays a crucial role at Mazda Motor Corporation, where he applies his expertise in engineering and innovation to advance the automotive industry. His dedication to developing cutting-edge engine technologies is evident in his extensive list of patents that aim to improve vehicle performance and environmental sustainability.

Collaborations

Throughout his career, Yamashita has collaborated with skilled professionals such as Masatoshi Seto and Keiji Araki. These partnerships have fostered a dynamic work environment at Mazda, leading to groundbreaking advancements in engine technology and design.

Conclusion

In summary, Hiroyuki Yamashita stands out as a leading innovator in engine systems and technologies. Through his numerous patents and collaborative efforts at Mazda Motor Corporation, he continues to push the boundaries of automotive engineering, making significant contributions to the future of sustainable transportation.

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