Company Filing History:
Years Active: 1995-1996
Title: The Innovative Contributions of Yoshimichi Okano
Introduction
Yoshimichi Okano is a prominent inventor based in Hyogo, Japan. He has made significant contributions to the field of polycarbonate production, holding a total of 5 patents. His work has advanced the methods of synthesizing polycarbonate, which is widely used in various applications.
Latest Patents
Okano's latest patents focus on innovative processes for producing polycarbonate through transesterification. One of his notable patents describes a method where a polycarbonate is produced from a dihydroxy compound, such as 2,2-bis(4-hydroxyphenyl)propane, and a diester of carbonic acid, like bisphenyl carbonate. This process is conducted in a reactor made of stainless steel, which is treated by electropolishing, acid pickling, or buffing on the surface that contacts the reactants. The transesterification catalyst used in this process includes a nitrogen-containing, electron-donating compound, along with an alkali metal or alkaline earth metal compound. Another patent outlines a similar process but emphasizes the use of a substance containing iron in an amount of 50% by weight or less, which also contacts the reactants.
Career Highlights
Yoshimichi Okano is associated with Daicel Chemical Industries, Ltd., where he has been instrumental in developing advanced materials and processes. His expertise in polycarbonate production has positioned him as a key figure in the industry, contributing to the company's reputation for innovation.
Collaborations
Okano has worked alongside notable colleagues, including Yutaka Fukuda and Tsutomu Yamato. Their collaborative efforts have further enhanced the research and development initiatives within their organization.
Conclusion
Yoshimichi Okano's contributions to the field of polycarbonate production exemplify the impact of innovative thinking in material science. His patents reflect a commitment to advancing technology and improving industrial processes.