Patents by Inventor Kenshin Niwa

Kenshin Niwa 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).

  • Compound and polymeric compound
    Patent number: 8519073
    Abstract: A compound represented by general formula (I); and a polymeric compound including a structural unit (a1) represented by general formula (II). wherein R represents a hydrogen atom, a halogen atom, a lower alkyl group or a halogenated lower alkyl group; each of R1 to R3 independently represents an alkyl group or a fluorinated alkyl group, with the provision that no fluorine atom is bonded to a carbon atom adjacent to the tertiary carbon atom to which R1 to R3 are bonded, and at least one of R1 to R3 represents a fluorinated alkyl group; and R2 and R3 may form a ring structure.
    Type: Grant
    Filed: October 15, 2007
    Date of Patent: August 27, 2013
    Assignees: Tokyo Ohka Kogyo Co., Ltd., Daito Chemix Corporation
    Inventors: Yoshiyuki Utsumi, Hiroaki Shimizu, Kyoko Ohshita, Toshiharu Shimamaki, Kenshin Niwa, Seihin Shu
  • COMPOUND AND POLYMERIC COMPOUND
    Publication number: 20100069590
    Abstract: A compound represented by general formula (I); and a polymeric compound including a structural unit (a1) represented by general formula (II). wherein R represents a hydrogen atom, a halogen atom, a lower alkyl group or a halogenated lower alkyl group; each of R1 to R3 independently represents an alkyl group or a fluorinated alkyl group, with the provision that no fluorine atom is bonded to a carbon atom adjacent to the tertiary carbon atom to which R1 to R3 are bonded, and at least one of R1 to R3 represents a fluorinated alkyl group; and R2 and R3 may form a ring structure.
    Type: Application
    Filed: October 15, 2007
    Publication date: March 18, 2010
    Applicants: Tokyo Ohka Kogyo Co., Ltd., Daito Chemix Corporation
    Inventors: Yoshiyuki Utsumi, Hiroaki Shimizu, Kyoko Ohshita, Toshiharu Shimamaki, Kenshin Niwa, Seihin Shu