Patents by Inventor Walter Yllo

Walter Yllo 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).

  • Organic acid containing filled and plasticized thermoplastic compositions based on ethylene interpolymers
    Patent number: 4434258
    Abstract: Filled thermoplastic compositions having enhanced elongation and useful, e.g., as sound-deadening sheeting for automotive carpet, are obtained by blending about 0-50% by weight of an ethylene interpolymer, such as ethylene/vinyl ester, ethylene/unsaturated mono- or dicarboxylic acids or esters of said unsaturated acids, etc.; 0-20% by weight of a plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers, polyether esters and combinations thereof; about 40-90% by weight of filler; from about 0.05 to about 5.
    Type: Grant
    Filed: January 15, 1982
    Date of Patent: February 28, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Frederick G. Schumacher, Walter Yllo
  • Extrudable self-supporting hot melt adhesive sheet
    Patent number: 4434261
    Abstract: Extrudable, self-supporting, nonblocking hot melt adhesive sheet is obtained by blending about 10-50% by weight of an ethylene interpolymer, such as ethylene/vinyl ester, ethylene/unsaturated mono- or dicarboxylic acids or esters of said unsaturated acids, etc.; 2-30% by weight of a plasticizer selected from the group consisting of processing oils, epoxidized oils, polyesters, polyethers, polyether esters and combinations thereof; about 20-80% by weight of filler; from 0 to about 10% by weight of at least one additive, such as organic acids, organic acid derivatives and surface active agents.
    Type: Grant
    Filed: August 6, 1982
    Date of Patent: February 28, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Edward G. Brugel, Walter Yllo
  • Highly filled thermoplastic compositions prepared with fine particle size filler
    Patent number: 4263196
    Abstract: Highly filled thermoplastic compositions of improved characteristics useful as sound-deadening sheeting for automotive carpet are obtained by blending about 5-50% by weight of an ethylene interpolymer, such as ethylene/vinyl ester, ethylene/unsaturated mono- or dicarboxylic acids or esters of said unsaturated acids, etc.; about 2-15% by weight of processing oil; and about 50-90% by weight of fine particle size filler. Pellets prepared from these compositions remain free flowing even after storage under load.
    Type: Grant
    Filed: June 27, 1979
    Date of Patent: April 21, 1981
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Frederick G. Schumacher, Walter Yllo
  • Highly filled thermoplastic compositions based on ethylene interpolymers and processing oils
    Patent number: 4191798
    Abstract: Highly filled thermoplastic compositions useful as sound-deadening sheeting for automotive carpet are obtained by blending about 5-50% by weight of an ethylene interpolymer, such as ethylene/vinyl ester, ethylene/unsaturated mono- or dicarboxylic acids or esters of said unsaturated acids, etc.; about 2-15% by weight of processing oil; and about 50-90% by weight of filler.
    Type: Grant
    Filed: November 22, 1978
    Date of Patent: March 4, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Frederick G. Schumacher, Walter Yllo