Location History:
- Ibaraki-ken, JP (2001)
- Ibaraki, JP (2005)
- Tsukuba, JP (2006 - 2007)
Company Filing History:
Years Active: 2001-2007
Title: Innovations of Hideyuki Tokumitsu
Introduction
Hideyuki Tokumitsu is a prominent inventor based in Tsukuba, Japan. He has made significant contributions to the field of materials science, particularly in the development of specialized rubber compositions. With a total of 6 patents to his name, Tokumitsu's work has had a considerable impact on various industrial applications.
Latest Patents
One of his latest patents is a hydrogenated nitrile rubber composition. This innovative composition is designed to provide a cross-linked product with a 20% modulus of 10 MPa or more and a thermal conductivity of 0.4 W/m·K or more at 25°C. The composition includes 100 parts by weight of hydrogenated nitrile rubber with a bound acrylonitrile content of 40% or more. It also features a polymer Mooney viscosity ML(100°C) of 75 or less, an iodine value of 23 or less, and at least 110 parts by weight in total of carbon black and other gas shielding fillers. This hydrogenated nitrile rubber composition is particularly effective as a molding material for sliding applications and static sealing members for highly permeable gases. It is distinguished by its carbon dioxide gas shieldability, heat resistance, and wear characteristics.
Another notable patent is a molding material for use with carbon dioxide. This material comprises chlorinated polyethylene with a chlorine content of 25–47% by weight or a blend of chlorinated polyethylene with vinyl chloride-based resin. It serves as a suitable material for sealing applications in carbon dioxide-contacting apparatuses that utilize carbon dioxide as a refrigerant. The addition of a specific silane coupling agent to this molding material effectively prevents blister generation in vulcanization moldings.
Career Highlights
Tokumitsu is currently associated with Nok Corporation, where he continues to innovate and develop advanced materials. His work has been instrumental in enhancing the performance and reliability of products used in various industries.
Collaborations
He has collaborated with notable coworkers such as Osamu Kobayashi and Shigeyuki Ono, contributing to a dynamic and innovative work environment.
Conclusion
Hideyuki Tokumitsu's contributions to the field of materials science through his patents and innovations have established him as a key figure in the industry. His work continues to influence the development of advanced materials for