Patents by Inventor Dennis O. Spencer

Dennis O. Spencer 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: 5643989
    Abstract: A composite material consisting of continuous random glass mats with a new non-peroxide sizing chemistry, polypropylene and a functionalized polypropylene. This composite gives unexpectedly higher performance in bumper beam applications. The functionalized polypropylene contains anhydride functionalities, which are preferably maleic anhydride.
    Type: Grant
    Filed: February 28, 1995
    Date of Patent: July 1, 1997
    Assignee: Azdel, Inc.
    Inventors: Hendrik T. Van De Grampel, Yongsheng Hou, Dennis O. Spencer, Robert G. Swisher, Thomas V. Thimons
  • Patent number: 4692375
    Abstract: An oriented continuous strand mat of glass fiber filaments is formed by interleaved layers of generally circular or random loops and elongated elliptical loops having their longitudinal axes positioned in the direction of travel of an endless conveyor upon which the glass fibers are deployed to form a mat useable in a stampable glass fiber reinforced thermoplastic resin sheet having increased tensile strength in the length of the sheet. An elongated deflector plate having a planar deflecting surface whose length is aligned with the direction of conveyor travel, and whose face plane is generally perpendicular thereto receives pulled strands which have passed through an air flow nozzle and forms the strands into the elongated elliptical loops used to make the mat.
    Type: Grant
    Filed: March 5, 1987
    Date of Patent: September 8, 1987
    Assignee: Azdel, Inc.
    Inventors: Jeffrey A. Neubauer, Walter J. Reese, Dennis O. Spencer
  • Patent number: 4615717
    Abstract: An oriented continuous strand mat of glass fiber filaments is formed by interleaved layers of generally circular or random loops and elongated elliptical loops having their longitudinal axes positioned in the direction of travel of an endless conveyor upon which the glass fibers are deployed to form a mat useable in a stampable glass fiber reinforced thermoplastic resin sheet having increased tensile strength in the length of the sheet. An elongated deflector plate having a planar deflecting surface whose length is aligned with the direction of conveyor travel, and whose face plane is generally perpendicular thereto receives pulled strands which have passed through an air flow nozzle and forms the strands into the elongated elliptical loops used to make the mat.
    Type: Grant
    Filed: September 27, 1985
    Date of Patent: October 7, 1986
    Assignee: PPG Industries, Inc.
    Inventors: Jeffrey A. Neubauer, Walter J. Reese, Dennis O. Spencer