Patents by Inventor Elizabeth I. H. McGrew

Elizabeth I. H. McGrew 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).

  • Electrochemical method for preparing peroxy acids
    Patent number: 6949178
    Abstract: A method and apparatus for the generation and collection of an aqueous peracid solution at the cathode of a PEM electrolyzer. The electrochemical process introduces carboxylic acid (such as distilled table vinegar, lactic acid, citric acid or combinations) to the anode and a source of oxygen to the cathode. The PEM electrolyzer has a gas diffusion cathode having a cathodic electrocatalyst that is capable of hydrogen peroxide generation. The peracid solution is generated at the gas diffusion cathode and the solution is very pure and may be used for disinfecting or sterilizing various items or solutions. In a second embodiment, the carboxylic acid may be provided directly to the cathode, such as in the form of an acid vapor.
    Type: Grant
    Filed: July 9, 2002
    Date of Patent: September 27, 2005
    Assignee: Lynntech, Inc.
    Inventors: Charles L. K. Tennakoon, K. Scott McKenzie, Michelle Will, Elizabeth I. H. McGrew
  • Electrochemical method for preparing peroxy acids
    Publication number: 20040007476
    Abstract: A method and apparatus for the generation and collection of an aqueous peracid solution at the cathode of a PEM electrolyzer. The electrochemical process introduces carboxylic acid (such as distilled table vinegar, lactic acid, citric acid or combinations) to the anode and a source of oxygen to the cathode. The PEM electrolyzer has a gas diffusion cathode having a cathodic electrocatalyst that is capable of hydrogen peroxide generation. The peracid solution is generated at the gas diffusion cathode and the solution is very pure and may be used for disinfecting or sterilizing various items or solutions. In a second embodiment, the carboxylic acid may be provided directly to the cathode, such as in the form of an acid vapor.
    Type: Application
    Filed: July 9, 2002
    Publication date: January 15, 2004
    Inventors: Charles L. K. Tennakoon, K. Scott McKenzie, Michelle Will, Elizabeth I.H. McGrew