Location History:
- Kariya, JP (1994)
- Toyota, JP (1996 - 2006)
Company Filing History:
2 out of 19,697 
2 out of 3,252 
1 out of 1 Years Active: 1994-2006
Title: Innovations by Hidehiko Asama
Introduction
Hidehiko Asama is a notable inventor based in Toyota, Japan. He has made significant contributions to the field of internal combustion engines, holding a total of 5 patents. His work focuses on enhancing engine performance and efficiency through innovative technologies.
Latest Patents
One of Asama's latest patents is a cylinder identification device for internal combustion engines. This device utilizes an intake cam sensor and an exhaust cam sensor to output signals indicative of the camshaft's rotation angle. The output signal levels vary according to the crankshaft's rotation angle, allowing for effective cylinder identification based on the combination of these signals. This innovation enhances the startability of the engine by quickly identifying the initial cylinder for fuel injection during engine start-up.
Another significant patent by Asama involves air-fuel ratio control with improved fuel supply operation immediately after complete combustion of the air-fuel mixture. In this system, a target engine speed is set based on coolant temperature during engine cranking. The target speed is variable over time and converges to a value lower than the normal idle speed. By comparing the actual engine speed with the target speed, the air-fuel ratio can be controlled, optimizing engine performance.
Career Highlights
Throughout his career, Hidehiko Asama has worked with prominent companies such as Denso Corporation and Nippondenso Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in engine technology.
Collaborations
Asama has collaborated with notable coworkers, including Yasuo Hirata and Yasuhisa Ichikawa. Their combined expertise has contributed to the advancement of engine technologies and innovations.
Conclusion
Hidehiko Asama's contributions to the field of internal combustion engines through his patents and collaborations highlight his role as a significant inventor. His work continues to influence engine performance and efficiency, showcasing the importance of innovation in automotive technology.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.