Location History:
- Aichiken, JP (2009)
- Okajoki, JP (2009)
- Okazaki, JP (2010)
Company Filing History:
3 out of 2,064 
3 out of 36,499 
Years Active: 2009-2010
Title: Innovations of Katsuhisa Ishii
Introduction
Katsuhisa Ishii is a notable inventor based in Okazaki, Japan. He has made significant contributions to the field of automotive technology, particularly in the area of automatic transmissions. With a total of three patents to his name, Ishii's work has had a lasting impact on the industry.
Latest Patents
One of his latest patents is a hydraulic servo for a brake in an automatic transmission. This innovative hydraulic servo features a piston that is secured against rotation without the need for a protrusion engaging the transmission casing. The piston is designed with an inner cylindrical surface that effectively grasps return springs compressed between the piston and a return plate. This design ensures that the piston member is fixed to the bulkhead portion of the transmission case, preventing any rotation.
Another significant patent is for an automatic transmission with a lubricating structure. In this invention, a piston operating a first clutch is strategically placed between a first drum and a second drum. An oil reservoir, which stores lubricating oil for the first clutch, is located on the inner cylindrical surface of the piston’s skirt portion. The design includes barriers with different inner diameters, allowing for efficient overflow of lubricating oil to the second clutch when the second clutch is disengaged.
Career Highlights
Throughout his career, Katsuhisa Ishii has worked with prominent companies in the automotive sector. He has been associated with Aisin Aw Co., Ltd. and Toyota Jidosha Kabushiki Kaisha, where he has contributed to various innovative projects and developments.
Collaborations
Ishii has collaborated with notable coworkers, including Minoru Todo and Hirofumi Ota. Their combined expertise has further advanced the innovations in automotive technology.
Conclusion
Katsuhisa Ishii's contributions to the field of automatic transmissions through his patents demonstrate his innovative spirit and technical expertise. His work continues to influence the automotive industry, showcasing the importance of creativity and collaboration in engineering advancements.
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.