Patents by Inventor Abelardo M. Santos

Abelardo M. Santos 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 of imaging resist patterns of high resolution on the surface of a conductor
    Patent number: 4661431
    Abstract: An electrostatic latent image in a desired pattern is formed on an electrostatically imageable surface and toned with a liquid toner to form a toner image on the surface. The toner image is then transferred while still wet to a transfer sheet and then to the surface of a conductor, or the toner image may be transferred directly to the surface of a conductor without a transfer sheet, such direct transfer being preferred. The toner image is then fused to the conductor surface to provide an etch resist pattern of high resolution on the conductor surface. The conductor may then be etched to form a high density printed circuit. In the direct transfer method a nonpolar insulating solvent-carrier is applied to the surface of the conductor and the electrostatically imageable surface.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: April 28, 1987
    Assignee: Olin Hunt Specialty Products, Inc.
    Inventors: David P. Bujese, Peter J. Calabrese, Gary W. Schmidt, Abelardo M. Santos