Patents by Inventor Raymond E. Pickering

Raymond E. Pickering 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 and apparatus for the aqueous cleaning of populated printed circuit boards
    Patent number: 5129956
    Abstract: A method and apparatus for the aqueous cleaning of a printed circuit board having surface mounted components assembled thereon. The invention involves a heated aqueous solution sprayed under high pressure through a helically-vaned nozzle that is moving rotationally about the plane of a moving printed circuit board. The apparatus accomplishes a thorough cleaning of all components and areas of the printed circuit board with the use of a water based cleaning solution.
    Type: Grant
    Filed: October 6, 1989
    Date of Patent: July 14, 1992
    Assignee: Digital Equipment Corporation
    Inventors: Raymond E. Pickering, Patricia E. Waitkus, Delmar R. Parsons, Lincoln Soule, William T. Walker, Robert E. Bedaw