Location History:
- Kawagoe, JP (1980 - 1982)
- Iruma, JP (1990)
- Shinjuku, JP (1988 - 1992)
- Tokyo, JP (1984 - 1993)
Company Filing History:
15 out of 220 
4 out of 141 
2 out of 4,227 
Years Active: 1980-1993
Title: Innovator Yoshiharu Okumura: A Pioneer in Silane Compounds
Introduction: Yoshiharu Okumura, based in Tokyo, Japan, is a prolific inventor with a remarkable portfolio of 21 patents. His innovations primarily focus on silane compounds and processes for their preparation, which have significant implications in the fields of chemistry and materials science.
Latest Patents: Okumura's latest patents include the development of a novel silane compound, specifically an alkoxy cyclopentyl dimethoxysilane. This compound is synthesized through the reaction of cyclopentyl trihalosilane with an alcohol (ROH) and methanol, or alternatively, by reacting cyclopentyl trimethoxysilane with ROH. The alkoxy or R in ROH represents organic groups such as sec-butyl, tert-amyl, cyclopentyl, oxa-3-cyclopentyl, cyclohexyl, and 2-isopropyl-5-methyl cyclohexyl groups. These silane compounds are notably useful as catalytic components in olefin polymerization and as silane coupling agents. Additionally, Okumura has developed processes for preparing gamma-methacryloxypropylsilane compounds, which involve the reaction of allyl methacrylate with a hydrosilane compound in the presence of a platinum catalyst, ensuring effective yield while preventing gelation during purification.
Career Highlights: Yoshiharu Okumura's career includes significant roles at major companies such as Toa Nenryo Kogyo Kabushiki Kaisha and Tonen Corporation. His work has not only contributed to advancements in the field of silane chemistry but has also established him as a respected figure among his peers in the industry.
Collaborations: Throughout his career, Okumura has collaborated with notable coworkers, including Katsumi Kaneko and Kouji Shiozawa. These collaborations have fostered an environment of innovation and knowledge sharing, leading to breakthroughs in the applications of silane compounds.
Conclusion: Yoshiharu Okumura stands out as a significant inventor in the field of silane compounds, with his 21 patents testament to his contribution to science and industry. His innovative processes and compounds continue to influence various applications, marking him as a key player in contemporary chemical research.