Patents by Inventor Shohei NISHIZAWA

Shohei NISHIZAWA 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).

  • Publication number: 20210292462
    Abstract: A polyisocyanurate raw material composition containing a polyfunctional isocyanate, a compound (I) represented by general formula (I) shown below, and an epoxy compound. In general formula (I), each of R1 to R5 represents a hydrogen atom, an alkoxy group of 1 to 10 carbon atoms, an alkyl group of 2 to 10 carbon atoms (or an alkyl group of 1 to 10 carbon atoms in the case of R3 to R5), an aryl group of 6 to 12 carbon atoms, an amino group, a monoalkylamino group of 1 to 10 carbon atoms, a dialkylamino group of 2 to 20 carbon atoms, a carboxy group, a cyano group, a fluoroalkyl group of 1 to 10 carbon atoms, or a halogen atom (provide that R1 and R2 are not both hydrogen atoms).
    Type: Application
    Filed: July 11, 2019
    Publication date: September 23, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Hiroki KURAMOTO, Kenichi NAKANISHI, Shohei NISHIZAWA, Yoshishige OKUNO
  • Publication number: 20210188766
    Abstract: Provided is a fluorine-containing ether compound that can be suitably used as a material for a lubricant for a magnetic recording medium, capable of forming a lubricant layer having excellent chemical substance resistance and wear resistance even when the thickness is small. A fluorine-containing ether compound represented by the following formula (1): R1—R2—CH2—R3—CH2—R4—R5??(1) In the formula (1), R3 is a perfluoropolyether chain. R2 and R4 are divalent linkage groups having a polar group, and may be the same or different. R1 and R5 are terminal groups bonded to R2 or R4, which may be the same or different, and at least one of R1 and R5 is an organic group having 1 to 8 carbon atoms wherein one or more hydrogen atoms of the organic group is substituted with a cyano group.
    Type: Application
    Filed: July 30, 2018
    Publication date: June 24, 2021
    Applicant: SHOWA DENKO K.K.
    Inventors: Masaki NANKO, Naoya FUKUMOTO, Daisuke YAGYU, Yuta YAMAGUCHI, Tsuyoshi KATO, Hiroyuki TOMITA, Katsumi MUROFUSHI, Shohei NISHIZAWA