This inventor holds 14 USPTO granted patents and 2 EPO patents. Top assignees: Jatco Corporation, Nissan Motor Company Limited. Active years: 1976-2007.
Location History:
- Fujisawa, JA (1976)
- Fujisawa, JP (1979)
- Zushi, JP (1984)
- Ebina City, JP (1990)
- Ebina, JP (1992 - 1999)
- Kanagawa, JP (2004 - 2007)
Company Filing History:
Years Active: 1976-2007
Title: Wataru Ishimaru: Innovator in Automotive Transmission Technology
Introduction
Wataru Ishimaru is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of automotive technology, particularly in the development of multiple-speed transmissions. With a total of 14 patents to his name, Ishimaru's work has had a lasting impact on the automotive industry.
Latest Patents
Ishimaru's latest patents include innovative designs for multiple-speed transmissions for automotive vehicles. One of his notable inventions is a multiple-speed transmission that provides a wide gear ratio coverage by utilizing a basic structure of a six-speed transmission. This design incorporates a combination of two planetary gearsets, three clutches, and three brakes. Each speed is established by applying two of the six elements of the clutches and brakes. Another patent features a similar multiple-speed transmission, but it employs three planetary gearsets instead. This design also utilizes three clutches and three brakes, with speed established in the same manner.
Career Highlights
Throughout his career, Wataru Ishimaru has worked with leading companies in the automotive sector, including Jatco Corporation and Nissan Motor Company Limited. His expertise in transmission technology has positioned him as a key figure in the development of advanced automotive systems.
Collaborations
Ishimaru has collaborated with notable professionals in the industry, including Yasuo Sumi and Kunio Ohtsuka. These collaborations have further enhanced his contributions to automotive technology.
Conclusion
Wataru Ishimaru's innovative work in multiple-speed transmission technology has established him as a significant inventor in the automotive field. His patents and collaborations continue to influence the industry, showcasing his dedication to advancing automotive engineering.

