Patents by Inventor Davei Yu

Davei Yu 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).

  • Patent number: 5256460
    Abstract: A polymeric blend and a fuel container made of this blend. The blend has improved resistance to fuel and includes:(a) a copolymer obtained from copolymerization of .epsilon.-caprolactam, and a substance selected from the group consisting of:an aminocarboxylic acid having a carbon atom number not lower than 9,a lactam corresponding to said aminocarboxylic acid anda mixture of hexamethylenediamine with a dicarboxylic acid having a carbon atom number not lower than 9, a weight ratio of said .epsilon.-caprolactam with respect to said hexamethylenediamine plus said dicarboxylic acid being of from 4 to 9; and(b) a polyolefin polymer with functional groups selected from the group consisting of carboxyl groups, esters, anhydrides, and carboxylates.
    Type: Grant
    Filed: September 14, 1992
    Date of Patent: October 26, 1993
    Assignee: SNIA Tecnopolimeri S.p.A.
    Inventor: Davei Yu
  • Patent number: 4997720
    Abstract: Thermoplastic compositions and articles made therefrom which have a high receptivity toward automotive paints comprises the following components:2%-25% of a copolymer of an ethylenically unsaturated carboxylic acid and ethylene,3%-50% of an elastomer comprising an ethylene-alpha-olefin copolymer,1%-50% of a crystalline homopolymer or copolymer of propylene,5%-40% of polyethylene or a copolymer of ethylene and an alpha-olefin,2%-20% of an epoxy or phenoxy resin; andoptionally, up to 50% of an inorganic filler. Such articles, when injection molded, exhibit flexural moduli in the range of 100,000 to 200,000 psi and have excellent paintability, a broad range of stiffness values and high impact and tensile strengths suitable for automotive applications such as bumpers, facias and wheel covers.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: March 5, 1991
    Assignee: Dexter Corporation
    Inventors: Edward Bourbonais, Davei Yu, Khemchand Nangrani