Company Filing History:
Years Active: 1984-1992
Title: Takashi Yasumura: Innovator in Chemical Processes and Optical Fiber Technology
Introduction
Takashi Yasumura is a prominent inventor based in Fujimi, Japan. He has made significant contributions to the fields of chemical processes and optical fiber technology. With a total of 7 patents to his name, Yasumura's work has had a notable impact on industrial applications.
Latest Patents
One of Yasumura's latest patents is for a continuous process for preparing chlorotrifluoroethylene (CTFE). This innovative method involves the reaction of 1,1,2-trichloro-1,2,2-trifluoroethane (R-113) with zinc powder dispersed in an alcohol, such as methanol. The invention aims to facilitate the industrial preparation of CTFE in a continuous manner using a series of stirred tank reactors. The process allows for the efficient conversion of zinc into zinc chloride, achieving a conversion rate of 90% or above in the final reactor.
Another significant patent by Yasumura involves the development of an optical fiber with a glass core and fluoro-copolymer cladding. This step-index optical fiber utilizes quartz glass or inorganic optical glass as the core material, while a fluorine-containing resin serves as the cladding material. The copolymer of vinylidene fluoride with hexafluoroacetone is employed to create a highly transparent and durable cladding layer through a solution coating method.
Career Highlights
Yasumura is currently associated with Central Glass Company, Limited, where he continues to innovate and develop new technologies. His work has been instrumental in advancing the capabilities of chemical processes and optical materials.
Collaborations
Throughout his career, Yasumura has collaborated with notable colleagues, including Toshio Koishi and Chikashi Kawashima. These partnerships have contributed to the success of his inventions and the advancement of their respective fields.
Conclusion
Takashi Yasumura's contributions to chemical processes and optical fiber technology exemplify his innovative spirit and dedication to advancing industrial applications. His patents reflect a commitment to improving efficiency and performance in these critical areas.