This inventor holds 4 USPTO granted patents and 1 published patent application and 3 EPO patents. Top assignees: Toyota Jidosha Kabushiki Kaisha, Kabushiki Kaisha Toyota Jidoshokki. Active years: 2012-2018.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
3 out of 39,010 
1 out of 1,903 
Years Active: 2012-2018
Title: Innovations of Yoshihisa Hirosawa
Introduction
Yoshihisa Hirosawa is a notable inventor based in Kariya, Japan. He has made significant contributions to the field of internal combustion engines, holding a total of 4 patents. His work reflects a deep understanding of engine mechanics and innovative design.
Latest Patents
One of his latest patents is a piston for an internal combustion engine. This piston includes a piston body with a head, two side walls, two skirts, and a reinforcement member. The head features a recessed crown, while each side wall has a pin boss designed to support a piston pin. The skirts are strategically located at both the thrust and anti-thrust sides of the piston pin axis. The reinforcement member consists of two legs and a connecting portion that links the upper ends of the legs, which are insert-casted into the skirts and head.
Another significant patent is a control apparatus for an internal combustion engine equipped with superchargers. This invention involves a first and second supercharger arranged in series within the intake and exhaust passages. The system optimizes the supercharging effects by adjusting the openings of control valves based on the operational region of the engine. This innovative approach enhances engine performance during acceleration.
Career Highlights
Yoshihisa Hirosawa has worked with prominent companies in the automotive industry, including Toyota Motor Corporation and Toyota Jidoshokki Co., Ltd. His experience in these organizations has allowed him to develop and refine his inventions, contributing to advancements in engine technology.
Collaborations
He has collaborated with notable coworkers such as Tetsuji Tomita and Taku Ibuki. Their combined expertise has likely fostered a creative environment that encourages innovation and the development of cutting-edge technologies.
Conclusion
Yoshihisa Hirosawa's contributions to the field of internal combustion engines are noteworthy. His patents demonstrate a commitment to innovation and engineering excellence. His work continues to influence the automotive industry and inspire future advancements.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile