Patents Represented by Attorney Robert B. Coleman, Jr.

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  • Method for the recovery of geothermal energy
    Patent number: 4458492
    Abstract: A method for the recovery of geothermal energy from subterranean formations comprising injecting a thermally stable, non-corrosive, non-aqueous fluid into said formation to absorb heat; recovering the heated fluid from the formation; and, recovering heat energy from the heated fluid.
    Type: Grant
    Filed: March 27, 1978
    Date of Patent: July 10, 1984
    Assignee: Conoco Inc.
    Inventor: William C. Ziegenhain
  • Antifreeze formulation useful for retarding precipitation of aluminum corrosion products in the cooling systems of internal combustion engines
    Patent number: 4320023
    Abstract: Precipitation of aluminum corrosion products from phosphate-borate ethylene glycol based antifreeze formulations is retarded by incorporating in the antifreeze a precipitation retarding amount of alkylene diphosphonic acid, e.g., 1-hydroxyethylidene-1,1-diphosphonic acid.
    Type: Grant
    Filed: December 5, 1980
    Date of Patent: March 16, 1982
    Assignee: Conoco Inc.
    Inventor: Preston S. White
  • Corrosion monitoring and composition-analytical apparatus
    Patent number: 3942546
    Abstract: A simple apparatus and process for monitoring a selected component of a fluid system are provided wherein the apparatus comprises a simple diffusion probe, an electronic pumping means and a reading means whereby the diffusion and pumping rate are read directly as electrical current.
    Type: Grant
    Filed: September 11, 1973
    Date of Patent: March 9, 1976
    Assignee: Continental Oil Company
    Inventors: Frederick J. Radd, Donald H. Oertle
  • Process for producing anionic metal-containing sulfonates
    Patent number: 3931265
    Abstract: A process for producing oil-soluble anionic metal sulfonates is disclosed wherein an anionic metal acid anhydride or its corresponding hydrate is reacted with an oil-soluble sulfonic acid and a polyamine compound to produce the desired metal sulfonate. The metal constituent of the anionic metal acid anhydride is selected from the group consisting of silicon, molybdenum, vanadium, arsenic, phosphorus, selenium, boron and tellurium.
    Type: Grant
    Filed: November 12, 1973
    Date of Patent: January 6, 1976
    Assignee: Continental Oil Company
    Inventor: Roy C. Sias
  • Anti-friction sucker rod guide assembly
    Patent number: RE31016
    Abstract: An anti-friction sucker rod coupling and guide apparatus comprises:(a) a rod member having an anti-friction surface along its cylindrical length;(b) fasteners affixed at each end of the rod member for attaching the rod member within a sucker rod string;(c) a rod guide having an inner anti-friction surface contacting the anti-friction surface of the rod member and slideably positioned about the rod member, the rod guide having an outer diameter sufficient to functionally contact the inner diameter of a tubing string in which the sucker rod string is positioned, the rod guide further including passageway sufficient to permit passage of produced fluid the fasteners adapted to maintain the rod guide on the rod member within deformation.
    Type: Grant
    Filed: December 22, 1980
    Date of Patent: August 24, 1982
    Assignee: Conoco Inc.
    Inventor: Clarence Oster