Patents by Inventor Monte Allan Douglas

Monte Allan Douglas 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 for measuring contamination in liquids at PPQ levels
    Patent number: 7732225
    Abstract: A method of manufacturing a semiconductor device includes placing a sample of a liquid chemical containing a contaminant on a substantially impurity-free surface of a substrate. The liquid chemical is evaporated, leaving the contaminant on the surface. The contaminant is concentrated in a scanning solution, which is then evaporated to form a residue. A concentration of the contaminant in the residue is determined.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: June 8, 2010
    Assignee: Texas Instruments Incorporated
    Inventors: Jeffrey Allen Hanson, Lee M. Loewenstein, Monte Allan Douglas
  • METHOD FOR MEASURING CONTAMINATION IN LIQUIDS AT PPQ LEVELS
    Publication number: 20080121027
    Abstract: A method of manufacturing a semiconductor device includes placing a sample of a liquid chemical containing a contaminant on a substantially impurity-free surface of a substrate. The liquid chemical is evaporated, leaving the contaminant on the surface. The contaminant is concentrated in a scanning solution, which is then evaporated to form a residue. A concentration of the contaminant in the residue is determined.
    Type: Application
    Filed: June 29, 2007
    Publication date: May 29, 2008
    Applicant: Texas Instruments Incorporated
    Inventors: Jeffrey Allen Hanson, Lee M. Loewenstein, Monte Allan Douglas
  • Method for the photo-stimulated removal of trace metals from a semiconductor surface
    Patent number: 5695570
    Abstract: Generally, and in one form of the invention, a method is presented for the photo-stimulated removal of trace metals 16 from a surface 11, comprising the steps of covering the surface 11 with an ambient species 14, exciting the trace metals 16 and/or the ambient species 14 by photo-stimulation sufficiently to allow reaction of the trace metals with the ambient species to form metal products, and removing the ambient species 14 and the metal products from the surface 11.Other methods are also disclosed.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: December 9, 1997
    Assignee: Texas Instruments Incorporated
    Inventor: Monte Allan Douglas