Patents by Inventor William R. Schlich

William R. Schlich 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: 5070142
    Abstract: Disclosed are blends of (a) a polyetherimide and (b) a (meth) acrylate-styrene-acrylonitile polymer (ASA). The blends exhibit an improved heat distortion temperature flexural properties and tensile properties over the ASA component alone and have lower impact strengths than that associated with the ASA polymer alone.
    Type: Grant
    Filed: December 31, 1986
    Date of Patent: December 3, 1991
    Assignee: General Electric Company
    Inventors: Harold F. Giles, Jr., William R. Schlich
  • Patent number: 4908419
    Abstract: Disclosed are blends of (a) a polyetherimide and (b) a polyarylate, an aromatic polyester which is derived from a dihydric phenol and a dicarboxylic acid. These blends have improved flexural strength and flexural modulus over the polyarylate component alone and have a higher impact strength than that associated with the polyetherimide component of the blends. In addition, the blends exhibit improved molding performance characteristics as evidenced by a lower molding pressure being required than that necessary for either component of the blend when molded alone.
    Type: Grant
    Filed: January 29, 1982
    Date of Patent: March 13, 1990
    Assignee: General Electric Company
    Inventors: Fred F. Holub, William R. Schlich
  • Patent number: 4585852
    Abstract: The present invention concerns a two-step extrusion melt polymerization process for making polyetherimides. The first step of the process involves producing a low molecular weight polymer by melt polymerizing a mixture containing a molar excess of one of the monomers. The second step involves melt polymerizing a mixture containing the low molecular weight polymer produced by the first step and a stoichiometrically sufficient amount of the second monomer to produce the desired polyetherimide polymer. Polymerization in two stages, rather than by the conventional one stage process surprisingly results in reduced extruder torque levels and improved throughput rates.
    Type: Grant
    Filed: November 20, 1984
    Date of Patent: April 29, 1986
    Assignee: General Electric Company
    Inventors: Jhy-Dou R. Lo, William R. Schlich
  • Patent number: 4548997
    Abstract: Disclosed are blends of (a) a polyetherimide and (b) a thermoplastic polycarbonate. The blends exhibit a higher heat distortion temperature and an improved flexural strength and tensile strength over the polycarbonate component alone and have a higher impact strength than that associated with the polyetherimide component of the blends. In addition, the blends may exhibit good flame resistance.
    Type: Grant
    Filed: May 22, 1984
    Date of Patent: October 22, 1985
    Assignee: General Electric Company
    Inventors: Gary A. Mellinger, Harold F. Giles, Jr., Fred Holub, William R. Schlich
  • Patent number: 4427830
    Abstract: Disclosed are blends of (a) a polyetherimide and (b) a minor amount, e.g., about 1 to about 20 weight %, of polypropylene or copolymer thereof. Unexpectedly, these blends have a higher notched Izod impact strength than that associated with the polyetherimide component of the blends and those associated with other polyetherimide-polypropylene blends which do not contain a minor amount of polypropylene.
    Type: Grant
    Filed: March 18, 1982
    Date of Patent: January 24, 1984
    Assignee: General Electric Company
    Inventors: Harold F. Giles, Jr., William R. Schlich