Patents by Inventor Phelps B. Johnson

Phelps B. Johnson 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).

  • Cured composite, processes and composition
    Patent number: 5485541
    Abstract: A process for producing a cured composite and flexible light pipe, in which a molten cladding polymer and a crosslinkable core mixture are concurrently and coaxially extruded through a core mixture delivery tube of a coextrusion die, the extruded tubular cladding is filled with the extruded crosslinkable core mixture, and the crosslinkable core mixture is cured within the tubular cladding.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: January 16, 1996
    Assignee: Rohm and Haas Company
    Inventors: Andrew B. W. Bigley, Jr., Jeffrey L. Daecher, Norman L. Holy, Robert E. Jerman, Phelps B. Johnson, William J. Work
  • Flexible light pipe, cured composite and processes for preparation thereof
    Patent number: 5406641
    Abstract: Process for cured composites and flexible light pipe, in which a molten cladding polymer and a crosslinkable core mixture are coaxially extruded through a coextrusion die, the cladding is filled with the crosslinkable core mixture, and the crosslinkable core mixture is cured within the cladding.
    Type: Grant
    Filed: June 15, 1993
    Date of Patent: April 11, 1995
    Assignee: Rohm and Haas Company
    Inventors: Andrew B. W. Bigley, Jr., Jeffrey L. Daecher, Norman L. Holy, Robert E. Jerman, Phelps B. Johnson, William J. Work