Patents by Inventor William A. McLaughlin

William A. McLaughlin 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).

  • Removal of color bodies in bisphenol production
    Patent number: 4443635
    Abstract: In the production of bisphenols, color bodies which have been adsorbed on cationic exchange resins are removed by washing with at least one phenate selected from phenates of an alkali metal and of ammonia.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: April 17, 1984
    Assignee: Shell Oil Company
    Inventor: William A. McLaughlin
  • Acidizing reservoirs while chelating iron with sulfosalicylic acid
    Patent number: 4137972
    Abstract: The acidizing of a reservoir, particularly one that contains an asphaltenic oil, is improved by using an aqueous solution of strong acid which contains enough sulfosalicylic acid to prevent the formation of iron-asphaltenic solids.
    Type: Grant
    Filed: June 24, 1977
    Date of Patent: February 6, 1979
    Assignee: Shell Oil Company
    Inventors: William A. McLaughlin, David C. Berkshire
  • Acidizing asphaltenic oil reservoirs with acids containing salicylic acid
    Patent number: 4096914
    Abstract: A reservoir which contains an asphaltenic oil can be acidized with an aqueous acid without causing a deposition of permeability impairing iron-asphaltene compounds by dissolving or dispersing an effective amount of salicylic acid within at least the first injected portion of the aqueous acid.
    Type: Grant
    Filed: December 6, 1976
    Date of Patent: June 27, 1978
    Assignee: Shell Oil Company
    Inventors: William A. McLaughlin, Edwin A. Richardson
  • Process for forming a coalate solution in-situ
    Patent number: 4076078
    Abstract: This invention is a process for mining an underground formation of coal having high oxygen content by contacting the coal with a heated basic aqueous solution for a time sufficient to dissolve at least a portion of the coal formation to produce a coalate. Periodically or continuously, some of the dissolved material is removed to facilitate or improve access to the coal formation. The dissolved coal or coalate is then treated with a regenerating agent to recover basic aqueous solution from the coalate.
    Type: Grant
    Filed: August 23, 1976
    Date of Patent: February 28, 1978
    Assignee: Shell Oil Company
    Inventors: Gary Drinkard, William A. McLaughlin