Patents by Inventor Howard Byron Lovering

Howard Byron Lovering 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).

  • On-the-fly photoresist exposure apparatus
    Patent number: 4095891
    Abstract: A system for exposing photoresists "on-the-fly" is disclosed. The system incorporates a dye laser having an output pulse duration of less than about 250 nanoseconds to expose the photoresist while the photoresist is moving. Means are provided to synchronize the output of the laser to the motion of a photoresist coated surface and to insure spatial uniformity of energy across an object plane of an optical projection system.
    Type: Grant
    Filed: December 27, 1976
    Date of Patent: June 20, 1978
    Assignee: GCA Corporation
    Inventor: Howard Byron Lovering