Patents by Inventor John S. Chapin

John S. Chapin 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).

  • Multi-duct muffler
    Patent number: 4234054
    Abstract: This invention is a new and improved muffler for use on the exhaust of noise producing machines such as automotive engines, and the like. It is particularly characterized by utilization of a single inlet into a chamber from which there are a multiplicity of louvered or otherwise appropriately configured exhaust tubes appropriately wrapped with noise entrapping material, and in a preferred form utilizing a ceramic fiber material, and wherein the multiplicity of tubes ultimately open into a chamber from which the ultimate outlet is ducted.
    Type: Grant
    Filed: April 18, 1978
    Date of Patent: November 18, 1980
    Inventor: John S. Chapin
  • Sputtering process and apparatus
    Patent number: 4166018
    Abstract: Sputtering apparatus is described in which a magnetic field is formed adjacent a planar sputtering surface, the field comprising arching lines of flux over a closed loop erosion region on the sputtering surface.
    Type: Grant
    Filed: January 31, 1974
    Date of Patent: August 28, 1979
    Assignee: Airco, Inc.
    Inventor: John S. Chapin