This inventor holds 8 USPTO granted patents. Top assignees: Honda Giken Kogyo Kabushiki Kaisha, Nippon Leakless Industry Co., Ltd., Nippon Leakless Ind. Co., Ltd.. Active years: 1994-2004.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Niiza, JP (1994)
- Saitama, JP (2001 - 2002)
- Wako, JP (1997 - 2004)
Company Filing History:
8 out of 10,092 
2 out of 30 
1 out of 1 Years Active: 1994-2004
Title: Tsutomu Tomizawa: Innovator in Resin Spring Technology
Introduction
Tsutomu Tomizawa is a notable inventor based in Wako, Japan. He has made significant contributions to the field of engineering, particularly in the development of innovative manufacturing methods for resin springs. With a total of 8 patents to his name, Tomizawa's work has had a considerable impact on various industries.
Latest Patents
One of Tomizawa's latest patents is a method of manufacturing a resin spring. This method improves close contact between the spring body and inner-pressure generating members, which reduces variations in load characteristics due to repeated deformation during use. The process involves forming an elastomer preform with inner closed chambers, compressing the preform to create a spring body, and injecting an inner-pressure generating resin into the deformed inner chambers. This innovative approach enhances the performance and reliability of resin springs.
Another significant patent is for a vehicle damping force generating mechanism. This mechanism is designed to generate both compression and tensile side damping forces while maintaining a simple and lightweight structure. It provides an inexpensive axle suspension that simplifies the suspension structure, reduces weight, and effectively utilizes space. The mechanism includes an elastic body that generates a damping force when pressed, along with an internal pressure generating member that resists the pressing force.
Career Highlights
Throughout his career, Tsutomu Tomizawa has worked with prominent companies such as Honda and Nippon Leakless Industry Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in the automotive and manufacturing sectors.
Collaborations
Tomizawa has collaborated with talented individuals in his field, including Hiroki Makino and Ken Fujiwara. These partnerships have fostered a creative environment that has led to the development of advanced technologies and solutions.
Conclusion
Tsutomu Tomizawa's contributions to the field of resin spring technology and damping mechanisms demonstrate his innovative spirit and dedication to engineering excellence. His patents reflect a commitment to improving product performance and efficiency in various applications.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile