Patents Assigned to Polyplus, Inc.
  • Load-bearing structures with interlockable edges
    Patent number: 5776582
    Abstract: The present invention provides a load-bearing structure having interlockable peripheral edges. The peripheral edges provide at least one pair of upper and lower offsets. Each offset includes a plurality of spaced apart projections.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: July 7, 1998
    Assignee: Polyplus, Inc.
    Inventor: Donald G. Needham
  • Filament coating process
    Patent number: 5607531
    Abstract: The present invention provides a novel filament coating process. Useful filaments include high strength, reinforcing fiber such as fiberglass. By the process, a filament bundle is transversely spread and individual filaments are coated. In a particular application, pultruded rod may be advantageously made from the coated filament.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: March 4, 1997
    Assignee: Polyplus, Inc.
    Inventors: Donald G. Needham, William Kinzie, James H. Harris