Location History:
- Saitama, JP (1993 - 1994)
- Hanyu, JP (1992 - 1995)
- Tokyo, JP (2020)
Company Filing History:
4 out of 507 
3 out of 73 
1 out of 2,250 
Years Active: 1992-2020
Title: Inventor Hiroshi Tokumura - Innovator in Friction Material Technology
Introduction
Hiroshi Tokumura is a renowned inventor based in Hanyu, Japan, recognized for his contributions to friction material technology. With a remarkable portfolio of five patents, Tokumura has played a significant role in the development of advanced materials that enhance performance and safety across various applications.
Latest Patents
Tokumura's latest innovations include two noteworthy patents focusing on friction materials. The first patent describes a friction material that comprises a bio-soluble inorganic fiber and a metal sulfide, where the content of the bio-soluble inorganic fiber is 7% by volume or more. Importantly, this friction material is devoid of copper components and metal fibers, with potential inclusion of zinc.
The second patent presents a friction material that contains dust with bismaleimidetriazine as a major ingredient. This dust, when included in amounts of 1 to 20 weight percent in the friction material, significantly reduces noise generation compared to conventional friction materials that utilize cashew dust, while maintaining or exceeding equivalent frictional performance.
Career Highlights
Tokumura has made significant contributions to the field while working at various esteemed organizations, including Akebono Brake Industry Co., Ltd. and Akebono Research and Development Centre Ltd. His experience and expertise have been instrumental in the innovation of friction materials that meet the demands of modern applications.
Collaborations
Throughout his career, Tokumura has collaborated with notable colleagues such as Toru Yoshino and Nobuo Kamioka. These partnerships have fostered a creative environment that nurtures groundbreaking ideas and advancements in material sciences.
Conclusion
Hiroshi Tokumura stands out as an influential figure in the realm of friction material technology, with a robust patent portfolio and collaborations that drive innovation. His work not only enhances the quality of friction materials but also contributes to the advancement of safety and performance in various industries. As he continues to pursue new ideas, Tokumura's legacy as an inventor will undoubtedly inspire future generations in the field.