Patents by Inventor Thomas M Putvinski

Thomas M Putvinski 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).

  • Patent number: 6442977
    Abstract: A sol-gel process for fabricating bulk, germanium-doped silica bodies useful for a variety of applications, including core rods, substrate tubes, immediate overcladding, pumped fiber lasers, and planar waveguides, is provided. The process involves the steps of providing a dispersion of silica particles in an aqueous quaternary ammonium germanate solution—typically tetramethylammonium germanate, gelling the dispersion to provide a gel body, and drying, heat treating, and sintering the body to provide the germanium-doped silica glass.
    Type: Grant
    Filed: June 20, 2000
    Date of Patent: September 3, 2002
    Assignee: Fitel USA Corp.
    Inventors: Suhas Bhandarkar, Frank J McNally, Thomas M Putvinski
  • Patent number: 5326626
    Abstract: This invention embodies an optical medium which consists of polar, multi-monomolecular layers of organic dye molecules with a net polar orientation, considerable second order optical nonlinearity, and excellent thermal stability. The medium is prepared by repeated sequential depositions on a surface of multivalent metal ions, e.g. Zr.sup.4+, and organic dyes terminated with an acidic functionality, e.g. a phosphonic acid, followed by activation of the surface for the next deposition sequence. The monolayers are deposited in the form of a multilayer film containing up to 1000 or more monolayers. The monolayers are deposited from liquid solutions; therefore they may be deposited on substrates having diverse topography and configurations. Second harmonic generation (SHG) analysis establishes that the multilayers have uniform polar order which does not decrease with increasing numbers of monolayers in the film.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: July 5, 1994
    Assignee: AT&T Bell Laboratories
    Inventors: Christopher E. D. Chidsey, Howard E. Katz, Thomas M. Putvinski, Geoffrey R. Scheller, Marcia L. Schilling, William L. Wilson
  • Patent number: 5217792
    Abstract: This invention embodies an optical medium which consists of polar, multi-monomolecular layers of organic dye molecules with a net polar orientation, considerable second order optical nonlinearity, and excellent thermal stability. The medium is prepared by repeated sequential depositions on a surface of multivalent metal ions, e.g. Zr.sup.4+, and organic dyes terminated with an acidic functionality, e.g. a phosphonic acid, followed by activation of the surface for the next deposition sequence. The monolayers are deposited in the form of a multilayer film containing up to 1000 or more monolayers. The monolayers are deposited from liquid solutions; therefore they may be deposited on substrates having diverse topography and configurations. Second harmonic generation (SHG) analysis establishes that the multilayers have uniform polar order which does not decrease with increasing numbers of monolayers in the film.
    Type: Grant
    Filed: October 17, 1991
    Date of Patent: June 8, 1993
    Assignee: AT&T Bell Laboratories
    Inventors: Christopher E. D. Chidsey, Howard E. Katz, Thomas M. Putvinski, Geoffrey R. Scheller, Marcia L. Schilling, William L. Wilson