Company Filing History:
1 out of 36,771 
1 out of 1,838 
1 out of 2,606 
Years Active: 1981-1990
Title: Kazuhisa Mayumi: Innovator in Automotive Engineering
Introduction
Kazuhisa Mayumi is a notable inventor based in Aichi, Japan. He has made significant contributions to the field of automotive engineering, particularly in the development of advanced components that enhance vehicle performance and efficiency. With a total of 2 patents, Mayumi's work reflects his commitment to innovation in the automotive industry.
Latest Patents
One of Mayumi's latest patents is for an aluminum alloy piston and piston-ring assembly treated to suppress blowby gas and oil consumption. This invention includes a piston and piston-rings located in grooves formed in the piston. The surface hardening treatment applied to the lower groove surface of the top piston-ring groove improves the heat resistive property of the assembly. This is achieved without increasing the amount of blowby gas and oil consumption, as the resin removed from the piston ring fills the valleys of the rugged hardened surface of the piston-ring groove.
Another significant patent is for a spark plug with a stepped insulator and an inner constriction. This design features a stepped portion near the tip of the insulator, with the housing surrounding the insulator formed with an inner constriction. This configuration hinders the entry of air/fuel mixture and carbon particles into the inner space, thereby reducing carbon buildup on the insulator.
Career Highlights
Kazuhisa Mayumi has worked with prominent companies in the automotive sector, including Toyota Motor Corporation and Toyota Industries Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas, contributing to the advancement of automotive technology.
Collaborations
Throughout his career, Mayumi has collaborated with esteemed colleagues such as Norio Sasaki and Yorishige Maeda. These partnerships have fostered a creative environment that has led to the successful development of his patented inventions.
Conclusion
Kazuhisa Mayumi's contributions to automotive engineering through his innovative patents demonstrate his expertise and dedication to improving vehicle performance. His work continues to influence the industry, showcasing the importance of innovation in automotive technology.