Patents by Inventor James D. Huffines

James D. Huffines 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).

  • Surfactants
    Patent number: 4261925
    Abstract: Surfactants having an HLB of from about 12 to about 20, preferably 14 to about 20, are disclosed which correspond to formulas I and II: ##STR1## wherein: R.sub.1 is a nonpolymerizable hydrocarbyl or inertly-substituted hydrocarbyl group of at least 8 carbon atoms; R.sub.2 is hydrogen or alkyl; X is ##STR2## Y is a terminal inorganic or organic group; and n is at least 2.
    Type: Grant
    Filed: April 5, 1978
    Date of Patent: April 14, 1981
    Assignee: The Dow Chemical Company
    Inventors: Donald A. Tomalia, James D. Huffines
  • Composition and method for removing sulfide-containing scale from metal surfaces
    Patent number: 4220550
    Abstract: Sulfide-containing scale is removed from metal surfaces by contacting the encrusted surface with an aqueous acid cleaning solution having an aldehyde (e.g., formaldehyde) dissolved or dispersed in the acid in an amount sufficient to prevent the evolution of hydrogen sulfide gas.
    Type: Grant
    Filed: December 6, 1978
    Date of Patent: September 2, 1980
    Assignee: The Dow Chemical Company
    Inventors: Wayne W. Frenier, Michael D. Coffey, James D. Huffines, Donald C. Smith