Patents by Inventor Roberta L. McMahon

Roberta L. McMahon 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).

  • Hydride gas detecting tape
    Patent number: 6217827
    Abstract: A substrate such as a porous tape coated with an adsorbent and impregnated with a processing solution which includes a silver salt, an organic acid such as benzenetricarboxylic acid or benzenesulfonic acid (with or without the addition of nitric acid) and a glycol is a sensitive detecting means for hydride gases and is stable upon exposure to light.
    Type: Grant
    Filed: March 25, 1999
    Date of Patent: April 17, 2001
    Assignee: Zellweger Analytics, Inc.
    Inventors: Jingnian Zhang, Roberta L. McMahon