Patents by Inventor Tohihiko Toma

Tohihiko Toma has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for producing a fluoroalkanol
    Publication number: 20040091661
    Abstract: A process for producing a fluoroalkanol of high purity containing little evaporation residue, which can be industrially easily carried out with high selectivity, is provided. In the process, a radial initiator and CF2═CFR3 (formula 3) are continuously added to CHR1R2—OH (Formula 2) to react them to form H—(CFR3CF2)n—CR1R2—OH (formula 1). In the formulae, n is an integer of from 1 to 4, each of R1 and R2 is a hydrogen atom or a C1-3 alkyl group, and R3 is a fluorine atom or a C1-4 perfluoroalkyl group.
    Type: Application
    Filed: December 28, 2001
    Publication date: May 13, 2004
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Akihiro Wada, Hidemi Tanaka, Koichiro Tanabe, Nobuyuki Yamagishi, Tohihiko Toma
  • Process for producing a fluoroalkanol
    Publication number: 20020086131
    Abstract: A process for producing a fluoroalkanol of high purity containing little evaporation residue, which can be industrially easily carried out with high selectivity, is provided. In the process, a radial initiator and CF2═CFR3 (formula 3) are continuously added to CHR1R2—OH (Formula 2) to react them to form H—(CFR3CF2)n—CR1R2—OH (formula 1). In the formulae, n is an integer of from 1 to 4, each of R1 and R2 is a hydrogen atom or a C1-3 alkyl group, and R3 is a fluorine atom or a C1-4 perfluoroalkyl group.
    Type: Application
    Filed: December 28, 2001
    Publication date: July 4, 2002
    Applicant: ASAHI GLASS COMPANY LIMITED
    Inventors: Akihiro Wada, Hidemi Tanaka, Koichiro Tanabe, Nobuyuki Yamagishi, Tohihiko Toma