Patents by Inventor Matthew P. Hertel

Matthew P. Hertel 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).

  • TEST WAND FOR LIQUIDS
    Publication number: 20150285778
    Abstract: A species test wand for liquids, wherein a user is informed whether the concentration of a species is high, at an acceptable level, or low by a comparison of the color of the wand after exposure to the liquid with nearby labeled colored boxes integral with the wand, is described. Tests include liquid evaluation for chlorine, pH and total alkalinity, as examples.
    Type: Application
    Filed: November 12, 2013
    Publication date: October 8, 2015
    Inventors: Matthew P. Hertel, David A.N. Morris