This inventor holds 1 USPTO granted patent. Top assignees: Sumitomo Riko Company Limited, Toyota Jidosha Kabushiki Kaisha. Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 374 
1 out of 38,970 
Years Active: 2026
Title: Tsutomu Iwai and His Automotive Suspension Invention.
Introduction
Tsutomu Iwai is an inventor associated with Toyota, Japan. His patent work addresses the design and manufacture of an upper support used in a vehicle suspension system.
Latest Patents
Iwai is credited with 1 patent: “Upper Support and Method of Manufacturing Upper Support.” The invention describes an upper support with a bracket attached to the vehicle body and a support main body that receives a suspension component. The bracket consists of upper and lower metal brackets whose flanged parts overlap and are welded together at multiple points around the circumference. Fixing bolts are positioned in the overlapped flange area and spaced around its circumference. Adhesive applied along the outer edge seals the joint between the overlapping surfaces near the fixing bolts.
Career Highlights
Iwai’s professional affiliations include Sumitomo Riko Company Limited and Toyota Jidosha Kabushiki Kaisha. His patented work focuses on an automotive component and its manufacturing method.
Collaborations
Iwai’s named coworkers include Yuki Matsumoto and Yuta Kamada.
Conclusion
Tsutomu Iwai’s patent reflects a focused contribution to automotive suspension engineering, combining a welded bracket structure with adhesive sealing in an upper support.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile