Patents by Inventor Yuko OKUSA

Yuko OKUSA 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).

  • Method for suppressing pitch formation
    Patent number: 10519598
    Abstract: Provided are a pitch-formation suppressor and the like which can be widely applied independently of the substance that causes a pitch and of the situation to generate a pitch in a paper manufacturing process, and which can effectively suppress and prevent the troubles due to the pitch, such as foreign spots and defects in a paper, breakage of a paper, and lowering of workability. This pitch-formation suppressor comprises an alkaline solution in which a phenol resin and/or a modified phenol resin is dissolved, or an acid solution in which a phenol resin and/or a modified phenol resin is dissolved.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: December 31, 2019
    Assignees: KURITA WATER INDUSTRIES LTD., GUN EI CHEMICAL INDUSTRY CO., LTD.
    Inventors: Satoshi Wada, Yuko Okusa, Chigusa Taguchi, Yukio Abe, Michiyasu Yamazaki
  • PITCH INHIBITOR, PITCH INHIBITION METHOD, AND PROCESS FOR PRODUCING DEINKED PULP
    Publication number: 20150322629
    Abstract: Provided are a pitch-formation suppressor and the like which can be widely applied independently of the substance that causes a pitch and of the situation to generate a pitch in a paper manufacturing process, and which can effectively suppress and prevent the troubles due to the pitch, such as foreign spots and defects in a paper, breakage of a paper, and lowering of workability. This pitch-formation suppressor comprises an alkaline solution in which a phenol resin and/or a modified phenol resin is dissolved, or an acid solution in which a phenol resin and/or a modified phenol resin is dissolved.
    Type: Application
    Filed: December 26, 2013
    Publication date: November 12, 2015
    Applicants: Kurita Water Industries Ltd., Gun Ei Chemical Industry Co., Ltd.
    Inventors: Satoshi WADA, Yuko OKUSA, Chigusa TAGUCHI, Yukio ABE, Michiyasu YAMAZAKI