Patents by Inventor Larry W. Hilscher

Larry W. Hilscher 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).

  • Low viscosity hot-melt adhesives
    Patent number: 4749739
    Abstract: Disclosed is a hot-melt adhesive composition capable of bonding paper to metal, glass and polyethylene terephthalate comprising an amorphous polymer selected from polypropylene or copoly(propylene-butene) having a propylene content of greater than 50%, a hydrocarbon tackifier resin, and a rosin tackifier. Preferably, the composition also contains a polyethylene wax.
    Type: Grant
    Filed: November 25, 1986
    Date of Patent: June 7, 1988
    Assignee: Eastman Kodak Company
    Inventors: Bruce W. Foster, Larry W. Hilscher
  • Aqueous drilling and packer fluids
    Patent number: 4341645
    Abstract: Aqueous, clay-containing drilling fluids and packer fluids are modified for reduction of viscosity and gel strength upon addition of water soluble lignosulfonates and particular low molecular weight acrylic copolymers. Enhanced reduction of viscosity and gel strength may be obtained by also adding an ethoxylated phenol surfactant.
    Type: Grant
    Filed: January 16, 1981
    Date of Patent: July 27, 1982
    Assignee: NL Industries, Inc.
    Inventors: Steven R. Blattel, Larry W. Hilscher