Patents by Inventor Sebastian F. Prospero

Sebastian F. Prospero 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).

  • Method to reduce light propagation losses in optical glasses and optical waveguide fabricated by same
    Patent number: 5235662
    Abstract: The present invention provides a method of annealing optical glass layers, said method comprising the step of heating glass layers having an area greater than 0.01 cm.sup.2 to a temperature of between about 350 deg. C. and 1000 deg. C. in less than 10 minutes. The upper limit of the glass area that can be treated is limited only by the size of the quartz chamber. Current state-of-the-art chambers can accomodate glass areas of about 0.01 cm.sup.2 to about 324 cm.sup.2. According to another aspect of the invention, there is also provided an optical waveguide glass layer, treated according to the method of this invention, disposed on an integrated optical device.
    Type: Grant
    Filed: January 2, 1992
    Date of Patent: August 10, 1993
    Assignee: Eastman Kodak Company
    Inventors: Eric T. Prince, Sebastian F. Prospero, Mark M. Romach