Nishinomiya, Japan

Tadao Otsuka

This inventor holds 2 USPTO granted patents. Top assignees: Hitachi Metals, Ltd., Kyokuto Kaihatsu Kogyo, Co., Ltd.. Active years: 1986.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tadao Otsuka. Retrieved from https://idiyas.com/inventor/tadao-otsuka

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 2

Forward Citations = 13(Granted Patents)


Company Filing History:


Years Active: 1986

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2 patents (USPTO):Explore Patents

Title: Tadao Otsuka: Innovator in Coupling Mechanisms

Introduction

Tadao Otsuka is a notable inventor based in Nishinomiya, Japan. He has made significant contributions to the field of coupling mechanisms, holding a total of 2 patents. His innovative designs have enhanced the functionality and safety of various mechanical systems.

Latest Patents

Otsuka's latest patents include a "Coupling Mechanism for King Pin" and a "Coupler for Connecting Trailer to Tractor." The coupling mechanism features a plate member with an outer peripheral rib, jaws for receiving the king pin, and a locking member that secures the jaws in position. This design ensures reliable engagement and disengagement of the king pin. The coupler for connecting a trailer to a tractor includes a main plate with an oil groove for lubricant flow, king pin locking jaws, and a locking member that prevents pivotal movement of the jaws when the king pin is engaged. These inventions demonstrate Otsuka's commitment to improving mechanical coupling systems.

Career Highlights

Throughout his career, Tadao Otsuka has worked with prominent companies such as Hitachi Metals, Ltd. and Kyokuto Kaihatsu Kogyo Co., Ltd. His experience in these organizations has contributed to his expertise in mechanical engineering and innovation.

Collaborations

Otsuka has collaborated with notable coworkers, including Akira Inoue and Takashi Hattori. Their combined efforts have likely fostered a creative environment that encourages innovation and the development of new technologies.

Conclusion

Tadao Otsuka's contributions to coupling mechanisms reflect his dedication to engineering excellence. His patents and career achievements highlight the importance of innovation in mechanical systems.

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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