Patents by Inventor Douglas O. Pauls

Douglas O. Pauls 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 quantitative measurement of the corrosivity effect of residues present on the surface of electronic circuit assemblies
    Patent number: 5783938
    Abstract: An apparatus and test method for determining the cleanliness (based on corrosivity) of a specific area on an electronic circuit assembly, such as the area between holes or pads on a single side of an assembly. The apparatus includes: (1) an extraction cell for providing an extraction fluid to an electronic circuit assembly ("ECA") area to be measured; (2) an extraction fluid for extracting residue from the ECA area to be measured; (3) a test cell with two or more electrodes and a voltage source for providing a voltage to the electrodes; and (4) a timer for measuring the time between the application of the voltage and an electrical short between the electrodes.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: July 21, 1998
    Assignee: Contamination Studies Laboratories, Inc.
    Inventors: Terry L. Munson, Douglas O. Pauls