Patents by Inventor Sadao Murayama

Sadao Murayama 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).

  • Sponge roller and image-forming apparatus
    Patent number: 10717842
    Abstract: The present invention provides a sponge roller comprising a shaft body and an elastic layer formed on an outer peripheral surface of the shaft body, wherein the elastic layer is formed of a millable silicone rubber, unexpanded microballoon cells and chemical blowing agent cells, and an image forming apparatus comprising the sponge roller. The sponge roller has high durability, excellent surface smoothness and small permanent compression set.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: July 21, 2020
    Assignee: Shin-Etsu Polymer Co., Ltd.
    Inventor: Sadao Murayama
  • Sponge Roller and Image-Forming Apparatus
    Publication number: 20190040222
    Abstract: The present invention provides a sponge roller comprising a shaft body and an elastic layer formed on an outer peripheral surface of the shaft body, wherein the elastic layer is formed of a millable silicone rubber, unexpanded microballoon cells and chemical blowing agent cells, and an image forming apparatus comprising the sponge roller. The sponge roller has high durability, excellent surface smoothness and small permanent compression set.
    Type: Application
    Filed: November 2, 2016
    Publication date: February 7, 2019
    Inventor: Sadao Murayama