Patents by Inventor Gerridina J. Torny-Schutte

Gerridina J. Torny-Schutte 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).

  • Dissolving barium sulfate scale with aqueous solutions of salts of phosphomethyl and amino-substituted macrocyclic polyethers
    Patent number: 4288333
    Abstract: Barium sulfate scale can be removed from remote locations such as those in or around the borehole of a well extending into a subterranean earth formation by contacting the scale with an aqueous solution consisting essentially of water, a monovalent cation salt of a macrocyclic polyether containing at least two nitrogen-linked phosphomethyl groups and enough monovalent basic compound to provide a solution pH of about 8.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: September 8, 1981
    Assignee: Shell Oil Company
    Inventors: Arie van Zon, Feike de Jong, Gerridina J. Torny-Schutte
  • Dissolving barium sulfate scale with aqueous solutions of bicyclic macrocyclic polyethers and organic acid salts
    Patent number: 4215000
    Abstract: Barium sulfate scale is dissolved by contacting it with an aqueous solution of: a bicyclic macrocyclic polyether in which the intramolecular cavity or cript is preferentially receptive to the cations of alkaline earth metals, at least a catalytically effective proportion of an alkali metal salt of an organic acid, and enough dissolved alkaline inorganic alkali metal or ammonium compound to provide a solution pH of at least about 8.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: July 29, 1980
    Assignee: Shell Development Company
    Inventors: Feike De Jong, David N. Reinhoudt, Gerridina J. Torny-Schutte
  • Dissolving barium sulfate scale with aqueous solutions of salts of carboxymethyl monocyclic macrocyclic polyamines
    Patent number: 4190462
    Abstract: Barium sulfate scale can be removed from remote locations such as those in or around the borehole of a well extending into a subterranean earth formation by contacting the scale with an aqueous solution consisting essentially of water,a monovalent cation salt of a monocyclic macrocyclic polyamine containing at least two nitrogen-linked carboxymethyl groups and enough monovalent basic compound to provide a solution pH of about 8.
    Type: Grant
    Filed: January 15, 1979
    Date of Patent: February 26, 1980
    Assignee: Shell Oil Company
    Inventors: Reike De Jong, Gerridina J. Torny-Schutte, David N. Reinhoudt