Patents by Inventor Louis M. Panzer

Louis M. Panzer 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).

  • Silica-rubber mixtures having improved hardness
    Patent number: 7432321
    Abstract: A method for increasing the hardness of silica/rubber mixtures includes blending with the mixture at least one silane and a hardness-increasing amount of at least one member selected from the group consisting of thixotropic fumed silica, precipitated silica and an MQ resin, wherein Q is SiO4/2, M is R1R2R3SiO1/2, and R1,R2,and R3 are the same or different functional or non-functional organic groups, carbon black, a thermoplastic resin or a thermosetting resin.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: October 7, 2008
    Assignee: Momentive Performance Materials Inc.
    Inventors: Prashant G. Joshi, Antonio Chaves, Lesley Hwang, Michael Stout, Martin Hofstetter, Louis M. Panzer
  • Natural fiber-filled polyolefin composites
    Patent number: 6939903
    Abstract: A process for preparing a composite material is disclosed wherein the process comprises: A) sizing a natural fiber with a reactive organosilane; B) mixing the sized natural fiber with a polyolefin resin; and C) adding a functionalized polyolefin coupling agent to the mixture of the sized natural fiber and the polyolefin resin to provide said composite material.
    Type: Grant
    Filed: April 16, 2003
    Date of Patent: September 6, 2005
    Assignee: Crompton Corporation
    Inventors: William D. Sigworth, Roger A. Cheney, Louis M. Panzer, Henry L. Mei
  • Modified silane treated pigments or fillers and compositions containing the same
    Patent number: 6894089
    Abstract: The present invention is directed to a composition comprising a white pigment or extended white pigment surface treated with a silane having at least one functional group capable of reacting with acids and anhydrides, at least one polymeric material and a compatibilizer. Once treated, the pigment has improved processability and dispersibility in polymeric materials. Silanizing the pigment also enhances the brightness (increase whiteness and reduce yellowness) of the pigment.
    Type: Grant
    Filed: September 9, 2003
    Date of Patent: May 17, 2005
    Assignee: General Electric Company
    Inventors: Henry L. Mei, Louis M. Panzer, Eric R. Pohl, Robert E. Christie, Philbert E. Ramdatt
  • Natural fiber-filled polyolefin composites
    Publication number: 20040072924
    Abstract: A process for preparing a composite material is disclosed wherein the process comprises:
    Type: Application
    Filed: April 16, 2003
    Publication date: April 15, 2004
    Applicant: CROMPTON CORPORATION
    Inventors: William D. Sigworth, Roger A. Cheney, Louis M. Panzer, Henry L. Mei
  • Modified silane treated pigments or fillers and compositions containing the same
    Publication number: 20040048952
    Abstract: The present invention is directed to a composition comprising a white pigment or extended white pigment surface treated with a silane having at least one functional group capable of reacting with acids and anhydrides, at least one polymeric material and a compatibilizer. Once treated, the pigment has improved processability and dispersibility in polymeric materials. Silanizing the pigment also enhances the brightness (increase whiteness and reduce yellowness) of the pigment.
    Type: Application
    Filed: September 9, 2003
    Publication date: March 11, 2004
    Inventors: Henry L. Mei, Louis M. Panzer, Eric R. Pohl, Robert E. Christie, Philbert E. Ramdatt
  • Modified silane treated pigments or fillers and compositions containing the same
    Publication number: 20030027897
    Abstract: The present invention is directed to a composition comprising a white pigment or extended white pigment surface treated with a silane having at least one functional group capable of reacting with acids and anhydrides, at least one polymeric material and a compatibilizer. Once treated, the pigment has improved processability and dispersibility in polymeric materials. Silanizing the pigment also enhances the brightness (increase whiteness and reduce yellowness) of the pigment.
    Type: Application
    Filed: April 26, 2001
    Publication date: February 6, 2003
    Inventors: Henry L. Mei, Louis M. Panzer, Eric R. Pohl, Robert E. Christie, Philbert E. Ramdatt
  • Treatment of minerals with alkylsilanes and alkylsilane copolymers
    Patent number: 6455158
    Abstract: The present invention relates to the silanization or surface treatment of minerals with alkylsilanes and alkylsilane copolymers. More specifically, the present invention relates to alkylsilane copolymers useful for surface treating pigments or fillers. The alkylsilane copolymers comprise at least two different monomers. The copolymers find particular utility for the surface treatment of white pigments, such as titanium dioxide, for improving the dispersibility and processibility of the pigments when compounded with a polymeric material, in particular, when compounded with polyolefins.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: September 24, 2002
    Assignee: Crompton Corporation
    Inventors: Henry L. Mei, Louis M. Panzer, Herbert E. Petty, Philbert E. Ramdatt, Robert E. Christie, Juan Alfonso