Ibaraki, Japan

Takashi Kamijou

This inventor holds 2 USPTO granted patents and 3 published patent applications. Top assignee: Nitto-Denko Corporation. Active years: 2008-2010.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Kamijou. Retrieved from https://idiyas.com/inventor/takashi-kamijou

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

USPTO Granted Patents = 2 

Average Co-Inventor Count = 5.0

ph-index = 2

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 2008-2010

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2 patents (USPTO):Explore Patents

Title: Takashi Kamijou: Innovator in Polymer Technology

Introduction

Takashi Kamijou is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of polymer technology, particularly in the development of advanced materials for optical applications. With a total of 2 patents to his name, Kamijou's work has garnered attention in both academic and industrial circles.

Latest Patents

Kamijou's latest patents include innovations in retardation films and modified polymers. His first patent focuses on a novel modified polymer that serves as a raw material for reverse dispersion retardation films. This polymer eliminates the need to select multiple monomers or polymers, addressing issues related to glass transition temperature during drawing treatment. The modified polymer features a polyol skeleton and reacts with compounds like aromatic carboxylic acid hydride, resulting in a film that exhibits reverse wavelength dispersion characteristics.

The second patent outlines a method for producing an elliptically polarizing plate. This method involves forming multiple birefringent layers on a transparent protective film, which enhances the optical properties of the plate. The process includes applying a liquid crystal material and treating it to create the first birefringent layer, followed by the lamination of a polarizer and the formation of additional birefringent layers.

Career Highlights

Kamijou is currently employed at Nitto Denko Corporation, where he continues to innovate in the field of polymer materials. His work has been instrumental in advancing technologies that rely on optical films and polarizing plates.

Collaborations

Throughout his career, Kamijou has collaborated with esteemed colleagues such as Seiji Umemoto and Ikuo Kawamoto. These partnerships have contributed to the successful development of his patented technologies.

Conclusion

Takashi Kamijou's contributions to polymer technology and optical materials have established him as a prominent figure in his field. His innovative patents reflect a commitment to advancing material science and enhancing optical applications.

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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