Location History:
- Ome, JA (1976)
- Ohme, JA (1976)
- Ohme, JP (1982 - 1990)
- Oume, JP (1993)
Company Filing History:
8 out of 504 
2 out of 5,119 
1 out of 10 Years Active: 1976-1993
Title: The Innovations of Takashi Takusagawa: A Pioneering Inventor in Tire Technology
Introduction
Takashi Takusagawa is a notable inventor based in Ohme, Japan, recognized for his significant contributions to tire technology. With a remarkable portfolio of 10 patents, Takusagawa has innovated various designs and features that have transformed the performance and durability of pneumatic tires.
Latest Patents
Among his latest inventions, Takusagawa developed a pneumatic tire featuring an outer tread layer made of foam rubber. This innovative design aims to prevent crack occurrences at groove bottoms on both side areas of the foam rubber tread of all-season studless tires. The tire is constructed with a tread surface consisting of at least two rubber layers, where the hardness of the inner rubber layer ranges from 54 to 80 degrees in Shore hardness, being harder than the outer rubber layer. The outer foam rubber layer, which comprises a foam rate from 5% to 50% with at least a 10% volume ratio with respect to the tread volume, enhances tire performance on icy and snowy roads during winter. Additionally, the inner rubber layer is engineered to reduce changes in groove width post-vulcanization, minimizing dynamic strain concentration and consequently reducing the likelihood of crack generation.
Another noteworthy patent involves pneumatic tires designed with round and square shoulders. This design features multiple lugs defined by notches in the tread side region, presenting an alternating structure of round and square shoulders between adjoining lugs.
Career Highlights
Takusagawa has had a distinguished career, particularly noted for his work with Bridgestone Tire Company Limited and Bridgestone Corporation. His innovative spirit and engineering acumen have positioned him as a critical figure in the tire manufacturing industry.
Collaborations
Throughout his career, Takasagawa has collaborated with esteemed colleagues, including Nobumasa Ikeda and Hiroshi Hirakawa. These professional relationships have likely played a vital role in enhancing his innovative approaches and patent developments.
Conclusion
Takashi Takusagawa's contributions to the tire industry exemplify the impact of innovation in engineering. With ten patents to his name, his work continues to influence tire performance and safety, showcasing the significance of inventiveness in automotive technology.