Keizo Sano is a prominent inventor based in Mishima, Japan. He has made significant contributions to the field of polyester fiber technology. With a total of 3 patents to his name, Sano's work has had a considerable impact on the industry.

Latest Patents

One of Sano's latest patents is focused on a polyester fiber and method for its production. This innovative polyester fiber boasts a tenacity of at least 4.0 g/d and is formed from a copolyester with a degree of polymerization ranging from 80 to 100. The copolyester includes 1.0 to 2.0 mol % of its acid component featuring a metal sulfoisophthalic group. Additionally, 0.5 to 1.9 weight % of the copolyester is derived from a glycol component with a molecular weight between 400 and 6000. This polyester fiber is notable for its ability to be readily dyed with basic dyes. The production process involves spinning the copolyester under specific conditions, including a shear rate of ≤10^4 sec^-1 and a spinning draft ratio of ≤250.

Another significant patent by Sano involves a fiber and film forming polyester composition. This composition is suitable for both fiber and film formation and contains 0.2 to 3.0% by weight of fine particles of uniform size. These particles enhance the slippery tendency, opacity, and crystallizing potential of the polyester, containing lithium and phosphorus as a lithium salt of a phosphoric acid ester constituent of short-chain polyesters.

Career Highlights

Keizo Sano is associated with Toray Industries, Inc., a leading company in the field of advanced materials. His work at Toray has allowed him to focus on innovative solutions in polyester technology. Sano's contributions have been instrumental in advancing the capabilities of polyester fibers.

Collaborations

Throughout his career, Sano has collaborated with notable colleagues, including Yoshimasa Nishida and Michihiko Tanaka. These collaborations have fostered a creative environment that has led to significant advancements in their respective fields.

Conclusion

Keizo Sano's innovative work in polyester fiber technology has established him as a key figure in the industry. His patents reflect a commitment to enhancing the properties and production

Profile summary based on public USPTO records.

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