Patents by Inventor Beatrice A. Torgerson

Beatrice A. Torgerson 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 test kit for determining hydroxy aromatic compounds
    Patent number: 5779979
    Abstract: A method and test kit for the detection of hydroxy substituted aromatic compounds using a titanium film (12, 23) which reacts with the compound to change the light absorbance. Preferred films are prepared by reaction of a titanium alkoxide with an aliphatic carboxylic acid. The change in light absorbance of the film is preferably detected with an ultraviolet-visible spectrophotometer. Preferably the film is provided on a transparent slide (22) or on an inside wall of a spectrophotometer cell (10). The cells (10 and 20) are provided with covers (13 and 14) for holding the solution to allow the hydroxy substituted compounds to react with the film.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: July 14, 1998
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Kris A. Berglund, Joel I. Dulebohn, Beatrice A. Torgerson
  • Method and test kit for determining hydroxy aromatic compounds
    Patent number: 5776415
    Abstract: A method and test kit for the detection of hydroxy substituted aromatic compounds using a titanium film (12, 23) which reacts with the compound to change the light absorbance. Preferred films are prepared by reaction of a titanium alkoxide with an aliphatic carboxylic acid. The change in light absorbance of the film is preferably detected with an ultraviolet-visible spectrophotometer. Preferably the film is provided on a transparent slide (22) or on an inside wall of a spectrophotometer cell (10). The cells (10 and 20) are provided with covers (13 and 14) for holding the solution to allow the hydroxy substituted compounds to react with the film.
    Type: Grant
    Filed: August 12, 1996
    Date of Patent: July 7, 1998
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Kris A. Berglund, Joel I. Dulebohn, Beatrice A. Torgerson
  • Method for determining hydroxy aromatic compounds
    Patent number: 5462878
    Abstract: A method and test kit for the detection of hydroxy substituted aromatic compounds using a titanium film (12, 23) which reacts with the compound to change the light absorbance. Preferred films are prepared by reaction of a titanium alkoxide with an aliphatic carboxylic acid. The change in light absorbance of the film is preferably detected with an ultraviolet-visible spectrophotometer. Preferably the film is provided on a transparent slide (22) or on an inside wall of a spectrophotometer cell (10). The cells (10 and 20) are provided with covers (13 and 14) for holding the solution to allow the hydroxy substituted compounds to react with the film.
    Type: Grant
    Filed: September 6, 1994
    Date of Patent: October 31, 1995
    Assignee: Board of Trustees operating Michigan State University
    Inventors: Kris A. Berglund, Joel I. Dulebohn, Beatrice A. Torgerson