Patents by Inventor Sadayuki Fujita

Sadayuki Fujita 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).

  • Carbon black and rubber composition containing same
    Patent number: 7482401
    Abstract: A carbon black friendly to the global environment and a rubber composition containing the same, that is, a carbon black obtained from, as a starting material, a tall oil having an alkali metal ion concentration of 1000 ppm or less and a rosin content of 5 to 90% by weight and a rubber composition containing the same.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: January 27, 2009
    Assignee: The Yokohama Rubber Co., Ltd.
    Inventors: Tomoaki Sugiyama, Hiroshi Wakamatsu, Sadayuki Fujita
  • Carbon black and rubber composition containing same
    Publication number: 20060079625
    Abstract: A carbon black friendly to the global environment and a rubber composition containing the same, that is, a carbon black obtained from, as a starting material, a tall oil having an alkali metal ion concentration of 1000 ppm or less and a rosin content of 5 to 90% by weight and a rubber composition containing the same.
    Type: Application
    Filed: October 13, 2005
    Publication date: April 13, 2006
    Inventors: Tomoaki Sugiyama, Hiroshi Wakamatsu, Sadayuki Fujita