Patents by Inventor Wayne W. Frenier

Wayne W. Frenier 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).

  • Solvent for removing iron oxide deposits
    Patent number: 4623399
    Abstract: Liquid and foam formulations useful for removing iron oxide deposits, for example from heat transfer equipment, comprising an organic solution or foam of N-hydroxylethyl ethylenediamine triacetic acid and an organic acid (for example, formic acid); and a method of removing iron oxide deposits from encrusted equipment surfaces by injecting the liquid or foam formulation, preferably also containing a corrosion inhibitor, into equipment to be cleaned, and circulating the liquid or foam formulation.
    Type: Grant
    Filed: February 4, 1985
    Date of Patent: November 18, 1986
    Assignee: Dowell Schlumberger Incorporated
    Inventor: Wayne W. Frenier
  • Aqueous acid composition and method of use
    Patent number: 4430128
    Abstract: Aqueous acid compositions are described which comprise (a) hydroxyethylethylenediaminetriacetic acid, and (b) a compatible acid corrosion inhibitor. The compositions are useful in removing iron oxide scale from metal surfaces.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: February 7, 1984
    Assignee: The Dow Chemical Company
    Inventors: Wayne W. Frenier, David A. Wilson
  • Method and composition for removing sulfide-containing scale from metal surfaces
    Patent number: 4310435
    Abstract: The method of chemically cleaning acid-soluble, sulfide-containing scale from a metal surface using an aqueous cleaning composition comprising an aqueous non-oxidizing acid having one or more aldehydes dissolved or dispersed therein is improved by generating the aldehyde in situ. An aqueous acid cleaning composition comprising hydrochloric or sulfuric acid and hexamethylene tetramine is a preferred composition.
    Type: Grant
    Filed: December 6, 1979
    Date of Patent: January 12, 1982
    Assignee: The Dow Chemical Co.
    Inventor: Wayne W. Frenier
  • 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
  • Sulfonium compounds as corrosion inhibitors in aqueous acidic cleaning solutions
    Patent number: 4210552
    Abstract: Certain sulfonium salts are herein described which are useful corrosion inhibitors in aqueous acidic cleaning solutions, even in the presence of ferric ions.
    Type: Grant
    Filed: September 28, 1978
    Date of Patent: July 1, 1980
    Assignee: The Dow Chemical Company
    Inventors: Wayne W. Frenier, William J. Settineri
  • Sulfonium compounds as corrosion inhibitors in aqueous acidic cleaning solutions
    Patent number: 4101438
    Abstract: Certain sulfonium salts are herein described which are useful corrosion inhibitors in aqueous acidic cleaning solutions, even in the presence of ferric ions.
    Type: Grant
    Filed: March 22, 1976
    Date of Patent: July 18, 1978
    Assignee: The Dow Chemical Company
    Inventors: Wayne W. Frenier, William J. Settineri
  • Certain heterocyclic sulfonium compounds
    Patent number: 4054578
    Abstract: Novel sulfonium compounds are described herein which correspond to the formula ##STR1## The sulfonium compounds are useful corrosion inhibitors in acidic cleaning solutions.
    Type: Grant
    Filed: April 29, 1976
    Date of Patent: October 18, 1977
    Assignee: The Dow Chemical Company
    Inventors: Wayne W. Frenier, William J. Settineri
  • Novel sulfonium corrosion inhibitors in aqueous acid solutions
    Patent number: 3996147
    Abstract: The corrosion of metal surfaces in contact with aqueous acid cleaning solutions is inhibited by sulfonium salt corresponding to the formula ##STR1## wherein n is 1 or 2; R.sub.1 is an electron withdrawing group; R.sub.2 is a hydrocarbyl radical or inertly-substituted hydrocarbyl radical of up to about 24 carbon atoms; R.sub.3 is alkyl of from 1 to 4 carbon atoms, inertly-substituted alkyl of 2-4 carbon atoms, allyl, phenyl or inertly-substituted phenyl; or R.sub.2 and R.sub.3 are joined to form a 5- or 6-membered heterocyclic ring; and A.sup.- is a compatible anion. These sulfonium salts are effective corrosion inhibitors even in the presence of ferric ions.
    Type: Grant
    Filed: August 8, 1973
    Date of Patent: December 7, 1976
    Assignee: The Dow Chemical Company
    Inventors: William J. Settineri, Wayne W. Frenier, James H. Oswald
  • Naphthylmethyl sulfonium compounds
    Patent number: 3969414
    Abstract: Novel sulfonium compounds are described herein which correspond to the formula ##SPC1##The sulfonium compounds are useful corrosion inhibitors in acidic cleaning solutions.
    Type: Grant
    Filed: February 18, 1975
    Date of Patent: July 13, 1976
    Assignee: The Dow Chemical Company
    Inventors: Wayne W. Frenier, William J. Settineri
  • Sulfonium compounds as corrosion inhibitors in aqueous acidic cleaning solutions
    Patent number: RE30283
    Abstract: Certain sulfonium salts are herein described which are useful corrosion inhibitors in aqueous acidic cleaning solutions, even in the presence of ferric ions.
    Type: Grant
    Filed: February 13, 1979
    Date of Patent: May 27, 1980
    Assignee: The Dow Chemical Company
    Inventors: Wayne W. Frenier, William J. Settineri