Patents by Inventor Frank H. Murphy

Frank H. Murphy 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).

  • High purity polyether polyols
    Patent number: 4946939
    Abstract: High purity polyether polyol compositions such as polyethylene glycol are made having small amounts of impurities such as oligomers of active hydrogen compounds with alkylene oxides. The high purity is achieved by subjecting the polyether polyol compositions to membrane filtration to get less than about 10 parts per million of the low molecular weight oligomers.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: August 7, 1990
    Assignee: The Dow Chemical Company
    Inventors: Frank H. Murphy, Robert T. Jernigan, Jeff G. Grierson, Wayne G. Wessels
  • Recovery of zinc and ammonium chloride
    Patent number: 4865831
    Abstract: The zinc and ammonia values in solutions containing zinc chloride or zinc monoammine chloride and ammonium chloride can be recovered by adding ammonia to a pH of about 5.5 to about 8.5 and separating the precipitated zinc diammine chloride from the residual aqueous solution of ammonium chloride. The zinc diammine chloride can be used as is or further converted to anhydrous zinc chloride and ammonia and the aqueous solution of ammonium chloride can be used as is or basified to recover the ammonia.
    Type: Grant
    Filed: February 26, 1988
    Date of Patent: September 12, 1989
    Assignee: The Dow Chemical Company
    Inventors: Frank H. Murphy, Matt W. Oleksy
  • Process for producing 2,3,5,6-tetrachloropyridine
    Patent number: 4804764
    Abstract: In accordance with the present invention, 2,3,5,6-tetrachloropyridine is advantageously prepared by contacting pentachloropyridine in a solvent selected from the group consisting of alkylnitriles, water, alkylsulfoxides, tetramethylsulfone, C-1 to C-5 alcohols, alkyl carbonates and mixtures thereof, in the presence of an ammonium salt of an organic or inorganic acid with about 0.7 to about 1.1 g atoms of zinc per mole of pentachloropyridine.
    Type: Grant
    Filed: May 14, 1987
    Date of Patent: February 14, 1989
    Assignee: The Dow Chemical Company
    Inventor: Frank H. Murphy
  • Process for producing 2,3,5,6-tetrachloropyridine
    Patent number: 4703123
    Abstract: In accordance with the present invention, 2,3,5,6-tetrachloropyridine is advantageously prepared by contacting pentachloropyridine in a solvent selected from the group consisting of alkylnitriles, water, alkylsulfoxides, tetramethylsulfone, C-1 to C-5 alcohols, alkyl carbonates and mixtures thereof, in the presence of an ammonium salt of an organic or inorganic acid with about 0.7 to about 1.1 g atoms of zinc per mole of pentachloropyridine.
    Type: Grant
    Filed: September 19, 1986
    Date of Patent: October 27, 1987
    Assignee: The Dow Chemical Company
    Inventor: Frank H. Murphy
  • Current switching member for circuit breakers
    Patent number: 4339642
    Abstract: The movable arm of a circuit breaker provides at its lower extremity a backing surface against which a copper carrier is clipped. A movable contact is affixed to the exposed surface of the carrier beyond the backing surface, such that current flow between the contact and a flexible, conductive braid, also affixed to the carrier, is conducted through the carrier rather than the arm which may then be fashioned from a less expensive, relatively low conductivity material such as steel.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: July 13, 1982
    Assignee: General Electric Company
    Inventors: Raymond K. Seymour, Frank H. Murphy, Lelio C. Vergnano
  • Circuit breaker accessories packaged in a standardized molded case
    Patent number: 4297663
    Abstract: Various circuit breaker accessories, such as a shunt trip, an undervoltage release, an auxiliary switch, and a bell alarm, are individually packaged in a standardized molded insulative accessory case for ultimate factory or even field installation in a molded case, automatic power circuit breaker.
    Type: Grant
    Filed: October 26, 1979
    Date of Patent: October 27, 1981
    Assignee: General Electric Company
    Inventors: Raymond K. Seymour, Frank H. Murphy