Patents by Inventor Douglas E. Spahr

Douglas E. Spahr 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).

  • Process for manufacturing pigment dispersions
    Patent number: 6917424
    Abstract: An improved process for making pigment dispersions containing a single pigment that match the tinting strength of a standard dispersion. The process employs a faster and more accurate wet measurement technique for analyzing and matching the dispersions to a standard that utilizes the spectral transmittance of the wet dispersions over the visible spectrum.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: July 12, 2005
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Allan Blase Joseph Rodrigues, Ken Stephen Schermacher, Anthony Joseph Martino, Douglas E. Spahr
  • Process for manufacturing transparent tints
    Patent number: 6719452
    Abstract: A rapid process for making transparent tints that match the color and tinting strength of a standard tint. The process involves the use of a faster and more accurate shading technique that utilizes the light transmittance properties of the tints in the wet over the visible spectrum and calculates therefrom the amount of components required to bring the tint within an acceptable match to the standard.
    Type: Grant
    Filed: March 13, 2002
    Date of Patent: April 13, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Ken Stephen Schermacher, Allan Blase Joseph Rodrigues, Anthony Joseph Martino, Douglas E. Spahr, Timothy Aaron Snyder
  • Process for manufacturing transparent tints
    Publication number: 20030004229
    Abstract: A rapid process for making transparent tints that match the color and tinting strength of a standard tint. The process involves the use of a faster and more accurate shading technique that utilizes the light transmittance properties of the tints in the wet over the visible spectrum and calculates therefrom the amount of components required to bring the tint within an acceptable match to the standard.
    Type: Application
    Filed: March 13, 2002
    Publication date: January 2, 2003
    Inventors: Ken Stephen Schermacher, Allan Blase Joseph Rodrigues, Anthony Joseph Martino, Douglas E. Spahr, Timothy Aaron Snyder
  • Process for manufacturing pigment dispersions
    Publication number: 20020174804
    Abstract: An improved process for making pigment dispersions containing a single pigment that match the tinting strength of a standard dispersion. The process employs a faster and more accurate wet measurement technique for analyzing and matching the dispersions to a standard that utilizes the spectral transmittance of the wet dispersions over the visible spectrum.
    Type: Application
    Filed: March 13, 2002
    Publication date: November 28, 2002
    Inventors: Allan Blase Joseph Rodrigues, Ken Stephen Schermacher, Anthony Joseph Martino, Douglas E. Spahr