Patents by Inventor Rex A. Neihof

Rex A. Neihof 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).

  • Patent number: 5858307
    Abstract: A field test kit for determining quantity of hydrogen sulfide in a liquid st sample. The test kit includes a test container with an opening for a liquid test sample containing hydrogen sulfide gas and a cap provided over the opening. The cap has calorimetric particulate indicator on its top inside surface. A silicone barrier disposed over the indicator protects the indicator from contact with the test sample.
    Type: Grant
    Filed: December 20, 1995
    Date of Patent: January 12, 1999
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Rex A. Neihof
  • Patent number: 5529841
    Abstract: A field test kit for determining quantity of hydrogen sulfide in a liquid st sample. The test kit includes a test container with an opening for a liquid test sample containing hydrogen sulfide gas and a cap provided over the opening. The cap has colorimetric particulate indicator on its top inside surface. A silicone barrier disposed over the indicator protects the indicator from contact with the test sample.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: June 25, 1996
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Rex A. Neihof