Patents by Inventor Hisaoi Oikawa

Hisaoi Oikawa 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).

  • Silsesquioxane derivative
    Patent number: 7235619
    Abstract: A silsesquioxane derivative represented by Formula (2): wherein R is hydrogen, an alkyl, an aryl, or an arylalkyl; and X is hydrogen, chlorine, a functional group, or a group having a functional group.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: June 26, 2007
    Assignee: Chisso Corporation
    Inventors: Yoshitaka Morimoto, Kenya Ito, Hisaoi Oikawa, Mikio Yamahiro, Kenichi Watanabe, Nobumasa Ootake
  • Silsesquioxane derivative
    Publication number: 20050215807
    Abstract: If chlorosilane is used in order to introduce a functional group into a silsesquioxane derivative having Si—OH, by-produced hydrogen chloride has to be treated. However, if alkoxysilane is substituted for chlorosilane, the long reaction time is required. A production process for a silsesquioxane derivative represented by Formula (2) characterized by using a compound represented by Formula (1), has been developed in order to solve such problems of conventional techniques.
    Type: Application
    Filed: May 4, 2005
    Publication date: September 29, 2005
    Inventors: Yoshitaka Morimoto, Kenya Ito, Hisaoi Oikawa, Mikio Yamahiro, Kenichi Watanabe, Nobumasa Ootake
  • Production process for silsesquioxane derivative and silsesquioxane derivative
    Publication number: 20040030084
    Abstract: If chlorosilane is used in order to introduce a functional group into a silsesquioxane derivative having Si—OH, by-produced hydrogen chloride has to be treated. However, if alkoxysilane is substituted for chlorosilane, the long reaction time is required.
    Type: Application
    Filed: August 6, 2003
    Publication date: February 12, 2004
    Inventors: Yoshitaka Morimoto, Kenya Ito, Hisaoi Oikawa, Mikio Yamahiro, Kenichi Watanabe, Nobumasa Ootake