Patents by Inventor Tugio Mitani

Tugio Mitani 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).

  • Polyvinyl chloride resin composition and surface delustered article
    Patent number: 5308905
    Abstract: A method of making a matted article, as well as the article per se wherein it is derived from molding and heat treating a vinyl chloride resin composition incorporated with 0.002-0.02 mol of zinc carboxylate for 100 g of vinyl chloride resin and 0.3-5 mol of a compound having two or more alcoholic hydroxyl groups in one molecule per mol of the zinc carboxylate. This composition yields an article having a good matte-finished surface owing to minute corrugated irregularities formed on the surface.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: May 3, 1994
    Assignee: Sumitomo Chemical Company, Limited
    Inventors: Tugio Mitani, Masayuki Yoshihara, Hiroaki Maruyama