Patents by Inventor Matthew W. Holtzberg

Matthew W. Holtzberg 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).

  • Method for molding composite structural plastic and objects molded thereby
    Patent number: 6344160
    Abstract: A method for molding composite structural plastic components is disclosed wherein such components are cast from a polymerizable thermoset or thermoplastic composition in a conventional metalcasting mold. In the instant invention, a low viscosity thermoset or thermoplastic composition having reinforcing fibers distributed therein is poured into conventional metalcasting molds, obviating the need for high heats and pressures associated with injection or compression molding of composite materials as taught in the prior art. In the case of a thermoset resin, the object to be fabricated is fully cured by the action of a catalyst at relatively low exothermic resin temperatures. In the case of a thermoplastic resin, curing is generally achieved independently of high added heat and pressure. If using a thermoplastic such as nylon 6 in the present invention, a preferred method of use involves the addition and combination of fiber reinforcements while the nylon 6 resin is being manufactured.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: February 5, 2002
    Assignee: Compcast Technologies, LLC
    Inventor: Matthew W. Holtzberg
  • Method for rapid production of structural prototype plastic parts
    Patent number: 6103156
    Abstract: A method for producing composite, structural plastic prototype parts, having visual and structural characteristics equivalent to those of an actual part to be commercially produced using existing soft tools, including wax, plaster, plastic, spray-metal, and rubber molds ordinarily used for visualization model making, developed using the latest rapid prototyping techniques. Short length fibers reinforcing low viscosity thermoset resins, and in particular resole phenolics, provides a pourable low bulk density polymer compound with minimal externally applied thermal requirements during molding and post cure when required.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: August 15, 2000
    Assignee: Matthew W. Holtzberg
    Inventor: Matthew W. Holtzberg
  • Composite cylinder housing and process
    Patent number: 4726334
    Abstract: A lightweight composite cylinder housing is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: September 18, 1986
    Date of Patent: February 23, 1988
    Assignee: Amoco Corporation
    Inventors: Matthew W. Holtzberg, Steven J. Henke, Lawrence D. Spaulding
  • Composite connecting rod and process
    Patent number: 4458555
    Abstract: A lightweight composite connecting rod is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: July 10, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: Matthew W. Holtzberg, Billy W. Cole
  • Composite push rod and process
    Patent number: 4453505
    Abstract: A lighweight composite push rod is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: June 12, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: Matthew W. Holtzberg, Lawrence D. Spaulding
  • Composite piston and process
    Patent number: 4440069
    Abstract: A lightweight composite piston is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: April 3, 1984
    Assignee: Standard Oil Corporation (Indiana)
    Inventors: Matthew W. Holtzberg, Steven J. Henke, Lawrence D. Spaulding, James C. Oakley
  • Composite timing gears and process
    Patent number: 4433964
    Abstract: Lightweight composite timing gears are provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: February 28, 1984
    Assignee: Standard Oil Company
    Inventors: Matthew W. Holtzberg, Steven J. Henke, Lawrence D. Spaulding
  • Composite valve and process
    Patent number: 4433652
    Abstract: A lightweight composite valve is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: February 28, 1984
    Assignee: Standard Oil Company
    Inventors: Matthew W. Holtzberg, Lawrence D. Spaulding
  • Composite piston ring and process
    Patent number: 4432925
    Abstract: A lightweight composite piston ring is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: February 21, 1984
    Assignee: Standard Oil Company, (Indiana)
    Inventors: Matthew W. Holtzberg, Lawrence D. Spaulding
  • Composite valve spring retainer and process
    Patent number: 4432311
    Abstract: A lightweight composite valve spring retainer is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: February 21, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: Matthew W. Holtzberg, Steven J. Henke, Lawrence D. Spaulding, Billy W. Cole
  • Composite wrist pin and process
    Patent number: 4430906
    Abstract: A lightweight composite wrist pin is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: February 14, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: Matthew W. Holtzberg, Lawrence D. Spaulding
  • Composite tappet
    Patent number: 4430970
    Abstract: A lightweight composite tappet is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: February 14, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: Matthew W. Holtzberg, Steven J. Henke, Wray V. McKenzie, Jr.
  • Composite rocker arm and process
    Patent number: 4430969
    Abstract: A lightweight composite rocker arm is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.
    Type: Grant
    Filed: June 11, 1982
    Date of Patent: February 14, 1984
    Assignee: Standard Oil Company (Indiana)
    Inventors: Matthew W. Holtzberg, Lawrence D. Spaulding
  • Composite automobile ignition cable
    Patent number: 4369423
    Abstract: A composite electrically conductive cable assembly for use as an ignition cable or the like. The assembly comprises an electrically conductive core comprising a plurality of mechanically and electrically continuous graphite filaments, and an electrically insulating elastomeric jacket which surrounds and envelopes the said filaments. The filaments preferably comprise graphitized polyacrylonitrile.
    Type: Grant
    Filed: August 20, 1980
    Date of Patent: January 18, 1983
    Inventor: Matthew W. Holtzberg