Koji Matsumoto is a notable inventor based in Niihama, Japan. He has made significant contributions to the field of polarizing film technology, holding a total of 5 patents. His innovative methods have advanced the production of high-contrast polarizing films, which are essential in various optical applications.

Latest Patents

Matsumoto's latest patents include a method for producing iodine type polarizing film. This method involves dipping a polyvinyl alcohol film, which has iodine adsorbed and oriented, into an aqueous solution containing boric acid. This process suppresses contact between the aqueous solution and oxygen, resulting in a polarizing film with high contrast. Another patent focuses on a similar method for producing polarizing film, where the aqueous solution has an absorbance of 0.13 or less at a wavelength of 450 nm, also yielding a high-contrast product.

Career Highlights

Throughout his career, Matsumoto has worked with prominent companies such as Sumitomo Chemical Company, Limited and Okura Industrial Co., Ltd. His experience in these organizations has contributed to his expertise in the field of polarizing films.

Collaborations

Matsumoto has collaborated with notable coworkers, including Narutoshi Hayashi and Nobuyuki Kurata. Their joint efforts have furthered advancements in polarizing film technology.

Conclusion

Koji Matsumoto's innovative work in polarizing film production has established him as a key figure in the industry. His patents reflect a commitment to enhancing optical technologies, and his collaborations have fostered significant advancements in this field.

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