Patents by Inventor Thomas L. Sharp

Thomas L. Sharp 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).

  • Method of removing iron sulfide and sludge from metal surfaces
    Patent number: 4032360
    Abstract: An oil-soluble composition capable of removing iron sulfide and sludge from metal surfaces and a method of such removal of iron sulfide and sludge from metal surfaces in an oil system, the composition comprising:A. from about 2 to about 15% by weight of a high molecular weight linear diamine;B. from about 3 to about 20% by weight of acetic acid;C. from about 20 to about 50% by weight of a low molecular weight ketone ether solvent;D. from about 1 to about 15% by weight of an alcohol solvent; andE. from about 20 to about 50% by weight of a heavy aromatic naphtha solvent.In the method of removing iron sulfide and sludge from the interior metal surfaces in an oil system, the above composition is added to the effluent of the oil system for onstream treatment in an amount effective to remove the iron sulfide and sludge. Generally, the composition is added to the effluent in an amount of from about 1 to about 20 parts per million of effluent.
    Type: Grant
    Filed: March 17, 1976
    Date of Patent: June 28, 1977
    Inventor: Thomas L. Sharp
  • Method of removing iron sulfide and sludge from metal surfaces
    Patent number: 4011097
    Abstract: A water-soluble composition capable of removing iron sulfide and sludge from metal surfaces and a method of such removal of iron sulfide and sludge from metal surfaces, particularly in a glycol system, the composition comprising:A. from about 2 to about 15% by weight of a high molecular weight linear diamine;B. from about 2.5 to about 18% by weight of acetic acid;C. from about 1 to about 10% by weight of an organic nitrogen substituted imidazoline;D. from about 6 to about 15% by weight of a non-ionic surfactant;E. from about 2 to about 8% by weight of a quaternary ammonium chloride;F. from about 1 to about 15% by weight of an alcohol solvent; andG. the remainder, water.In the method of removing iron sulfide and sludge from interior metal surfaces, particularly in a glycol system, the above composition is added to the effluent of the glycol system for onstream treatment in an amount effective to remove the iron sulfide and sludge.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: March 8, 1977
    Inventor: Thomas L. Sharp
  • Oil-soluble composition for removing iron sulfide and sludge from metal surfaces
    Patent number: 4003856
    Abstract: An oil-soluble composition capable of removing iron sulfide and sludge from metal surfaces and a method of such removal of iron sulfide and sludge from metal surfaces in an oil system, the composition comprising:A. from about 2 to about 15% by weight of a high molecular weight linear diamine;B. from about 3 to about 20% by weight of acetic acid;C. from about 20 to about 50% by weight of a low molecular weight ketone ether solvent;D. from about 1 to about 15% by weight of an alcohol solvent; andE. from about 20 to about 50% by weight of a heavy aromatic naphtha solvent.In the method of removing iron sulfide and sludge from the interior metal surfaces in an oil system, the above composition is added to the effluent of the oil system for onstream treatment in an amount effective to remove the iron sulfide and sludge. Generally, the composition is added to the effluent in an amount of from about 1 to about 20 parts per million of effluent.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: January 18, 1977
    Inventor: Thomas L. Sharp
  • Water-soluble imidazoline composition for removing iron sulfide and sludge from metal surfaces
    Patent number: 3969281
    Abstract: A water-soluble composition capable of removing iron sulfide and sludge from metal surfaces and a method of such removal of iron sulfide and sludge from metal surfaces, particularly in a glycol system, the composition comprising:A. from about 2 to about 15% by weight of a high molecular weight linear diamine;B. from about 2.5 to about 18% by weight of acetic acid;C. from about 1 to about 10% by weight of an organic nitrogen substituted imidazoline;D. from about 6 to about 15% by weight of a non-ionic surfactant;E. from about 2 to about 8% by weight of a quaternary ammonium chloride;F. from about 1 to about 15% by weight of an alcohol solvent; andG. the remainder, water.In the method of removing iron sulfide and sludge from interior metal surfaces, particularly in a glycol system, the above composition is added to the effluent of the glycol system for onstream treatment in an amount effective to remove the iron sulfide and sludge.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: July 13, 1976
    Inventor: Thomas L. Sharp