Tokyo, Japan

Ryouju Takagishi

This inventor holds 1 USPTO granted patent. Top assignee: Toshiba-Emi Limited. Active years: 1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryouju Takagishi. Retrieved from https://idiyas.com/inventor/ryouju-takagishi

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 = 4.0

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 1998

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1 patent (USPTO):Explore Patents

Title: Ryouju Takagishi: Innovator in Disk Case Design

Introduction: Ryouju Takagishi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of product design, particularly with his innovative disk case. His work exemplifies the intersection of functionality and simplicity in design.

Latest Patents: Ryouju Takagishi holds a patent for a disk case that features a pocket-shaped case body designed to accommodate a disk. The design includes tongue pieces at one edge of the case body, positioned at the centers of opposite halves of the disk insertion inlet. These tongue pieces are uniquely formed to align at one end while overlapping on the outside of the periphery. The case also includes perforations along the boundary between the tongue pieces and the case body, allowing for easy separation when needed. This innovative design ensures that the disk remains secure within the case, preventing any movement after placement.

Career Highlights: Ryouju Takagishi is currently employed at Toshiba EMI Limited, where he continues to develop and refine his inventive ideas. His work at Toshiba has allowed him to explore various aspects of product design and innovation.

Collaborations: Throughout his career, Ryouju has collaborated with talented individuals such as Toshitsugu Yamaguchi and Akihito Nakabayashi. These collaborations have contributed to the advancement of his projects and the overall innovation culture within his workplace.

Conclusion: Ryouju Takagishi's contributions to the design of disk cases highlight his innovative spirit and dedication to creating practical solutions. His patent reflects a commitment to enhancing user experience through thoughtful design.

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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