Patents by Inventor Martin J. Goodwin

Martin J. Goodwin 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).

  • Doped polymer films for waveguides
    Patent number: 5080931
    Abstract: A method of forming optical waveguides is described in which a film of a novolac resin is deposited on a transparent substrate and a dopant material is incorporated into the film during or after the coating step. Additional quantities of the same or different dopant may be incoporated into the dried film by solvent assisted indiffusion.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: January 14, 1992
    Assignee: Plessey Overseas Limited
    Inventors: Clive Trundle, Martin J. Goodwin, Robert Baker-Glenn, Jack Brettle, Neil Carr
  • Organic optical waveguides and method of fabricating waveguide structures
    Patent number: 4838634
    Abstract: An optical waveguide and method of fabricating waveguide structures is disclosed. More specifically, a method of producing an organic waveguide which comprises treating a transparent plastic substrate with a solution in a inert solvent of an organic dopant which is absorbed into the surface of the substrate, under conditions such that a surface layer is formed having a refractive index which is greater than that of the substrate. Said dopant has a higher affinity for the plastic's substrate than for the solvent.
    Type: Grant
    Filed: December 28, 1987
    Date of Patent: June 13, 1989
    Assignee: The Plessey Company plc
    Inventors: Ian Bennion, Clive Trundle, Jack Brettle, Martin J. Goodwin, Robert Glenn