Patents by Inventor Renato Sassoli

Renato Sassoli 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).

  • Lighthouse having a main filter and a supplemental filter
    Patent number: 4021820
    Abstract: An exposure lighthouse for use in printing screen structures for cathode-ray tubes comprising a lens assembly including a diffracting optical element, a main intensity-correction filter and a supplemental intensity-correction filter in series with the main filter. Both of the filters comprise preformed carbon particles in a light - transmitting binder.
    Type: Grant
    Filed: October 23, 1975
    Date of Patent: May 3, 1977
    Assignees: RCA Corporation, Videocolor S.A.
    Inventors: Thomas Louis Chase, Dino Duranti, Renato Sassoli
  • Method for preparing supplemental filter for lighthouse
    Patent number: 3953209
    Abstract: A method for preparing a supplemental intensity-correction filter for an exposure lighthouse that is used to print viewing-screen structures for cathode-ray tubes. The method involves printing a screen structure without a supplemental filter, calculating how incremental areas of the light field must be modified at the surface of an optical element of the lighthouse to produce the desired screen structure, and then printing a supplemental filter on that surface having the transmission characteristics necessary to modify the light field as required.
    Type: Grant
    Filed: August 20, 1973
    Date of Patent: April 27, 1976
    Assignee: RCA Corporation
    Inventors: Thomas Louis Chase, Dino Duranti, Renato Sassoli