Patents by Inventor Ken Tsuchibe

Ken Tsuchibe 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).

  • Processing aid, vinyl chloride resin composition containing the same, and process for producing molded article with the same
    Patent number: 6730741
    Abstract: The present invention provides a processing aid that reduces ungelled products and flow marks generated on a sheet, and improves releasability of the sheet from the metallic surface of a roll, with the processing aid comprising: a copolymer (A) obtained by copolymerizing a monomer mixture comprising 70 to 90% by weight of methyl methacrylate, 10 to 30% by weight of acrylate or methacrylate other than methyl methacryrate and a different type of monomer capable of being copolymerized with those monomers; and a copolymer (B) obtained by copolymerizing a monomer mixture comprising at least 30% by weight of methyl methacrylate and a monomer having as constitutional units at least one type selected from methacrylates other than methyl methacrylate, acrylates, aromatic alkenyl compounds and other monomers.
    Type: Grant
    Filed: February 1, 2002
    Date of Patent: May 4, 2004
    Assignee: Mitsubishi Rayon Co., Ltd.
    Inventors: Souichiro Honda, Akira Nakata, Ken Tsuchibe