Fukumachi, Japan

Takeo Kuwata

This inventor holds 1 USPTO granted patent and 2 published patent applications. Top assignee: Nittetsu Bolten Kabushiki Kaisha. Active years: 1981.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeo Kuwata. Retrieved from https://idiyas.com/inventor/takeo-kuwata

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 1 

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 1

Forward Citations = 19(Granted Patents)


Company Filing History:


Years Active: 1981

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1 patent (USPTO):Explore Patents

Title: Takeo Kuwata and His Fastener Set Invention.

Introduction.

Takeo Kuwata is an inventor associated with Fukumachi, Japan. His recorded patent concerns a fastener set designed to secure a nut while allowing excess bolt material to break away in a controlled manner. Kuwata is associated with Nittetsu Bolten Kabushiki Kaisha.

Latest Patents.

Kuwata’s listed patent is “Fastener set.” It describes a bolt body, nut, and washer fitted together. A notched portion of the bolt is designed to break under a predetermined torsional force. The nut has a coating containing a partially esterified polyol and a fatty acid or oxy-acid. When fastening torque is applied, the resulting reaction force is transmitted to the bolt body, breaking off the surplus portion above the notch. The supplied information lists 1 patent for Kuwata.

Career Highlights.

The available information connects Kuwata’s inventive work with Nittetsu Bolten Kabushiki Kaisha. His patented fastener design addresses controlled bolt breakage during tightening.

Collaborations.

Shoji Shimada and Mikio Usa are identified as Kuwata’s coworkers. The supplied information does not specify their roles in the fastener patent.

Conclusion.

Takeo Kuwata’s recorded invention combines a coated nut with a notched bolt to enable controlled removal of excess bolt material during fastening.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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