Patents by Inventor Robert Daniel King

Robert Daniel King 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).

  • Determining the concentration of a biocide additive in a liquid
    Patent number: 4036589
    Abstract: A method and a kit for testing the biocide concentration of a liquid containing a biocide of the type which breaks down in acidic aqueous solution to liberate formaldehyde. A strong aqueous acid is added to the liquid, and a modified Schiff's reagent is also added. Time is given for color to develop, and then the color intensity of the solution is read. In instances where oil-water emulsions or latices are involved, the emulsion is broken before adding the Schiff's reagent.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: July 19, 1977
    Assignee: J. R. Schneider Co., Inc.
    Inventor: Robert Daniel King