Patents by Inventor Bertalan J. Vegh

Bertalan J. Vegh 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).

  • Process for stripping color filter arrays from substrates
    Patent number: 4892616
    Abstract: A process for stripping a color filter array coating from a substrate of a solid-state color image sensing device to recover the substrate so that it subsequently can be used to produce another solid-state color image sensing device, such process comprising contacting the coating with a stripping solution comprising chromic acid and sulfuric acid for a time effective to remove the coating from the substrate. The process efficiently removes all of the coating, even when the coating has been baked and hardened by various processing steps, and does not adversely affect the electrical properties of the device, the exposed bond pads, or the backside of the wafer.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: January 9, 1990
    Assignee: Eastman Kodak Company
    Inventors: Bertalan J. Vegh, Laurel J. Pace