Patents by Inventor Thomas Wolfe

Thomas Wolfe 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).

  • Recovery of tungsten from ferrotungsten
    Patent number: 5788938
    Abstract: A method is provided whereby tungsten values are recovered from ferrotungsten by completely oxidizing the ferrotungsten at high temperatures in an oxygen atmosphere followed by digestion with sodium hydroxide to form soluble sodium tungstate. The sodium tungstate is then purified by conventional means. The method may be used to recover at least about 90% of the tungsten values present in the ferrotungsten.
    Type: Grant
    Filed: June 5, 1996
    Date of Patent: August 4, 1998
    Assignee: Osram Sylvania Inc.
    Inventors: Jia-Ming Chern, Thomas A. Wolfe, Michael J. Miller, Clarence D. Vanderpool
  • Process for reducing the average particle size of ammonium paratungstate powders
    Patent number: 5578285
    Abstract: A process for reducing the average particle size of an ammonium paratungstate powder having the steps of heating the ammonium paratungstate powder at a temperature of between about 110.degree. C. to about 205.degree. C. for a time sufficient to reduce the average particle size of the ammonium paratungstate powder by at least 20 percent.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: November 26, 1996
    Assignee: Osram Sylvania Inc.
    Inventor: Thomas A. Wolfe
  • Removal of carbonate from caustic sulfide solution
    Patent number: 5164171
    Abstract: In the manufacture of ammonium paratungstate, sulfide is added to a tungsten-containing solution in order to precipitate molybdenum sulfide. Volatiles, including sulfides, evolved during this process are collected in a caustic scrubbing solution. The sulfide values in the caustic scrubbing solution may be reused to precipitate molybdenum sulfide by first treating the caustic scrubbing solution with alkaline earth chloride or sulfate to precipitate out alkaline earth carbonate.
    Type: Grant
    Filed: July 1, 1991
    Date of Patent: November 17, 1992
    Assignee: GTE Products Corporation
    Inventors: Michael J. Miller, Martin C. Vogt, Thomas A. Wolfe
  • Method of making pure cobalt metal powder substantially free of divalent cationic impurities
    Patent number: 5154757
    Abstract: A method for producing pure cobalt metal powder involves the removal of divalent cationic impurities from a trivalent hexamine cobalt chloride solution. This solution is then decomposed to an insoluble cobalt oxide-containing material, from which pure cobalt metal powder is obtained through a chemical reduction process.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: October 13, 1992
    Assignee: GTE Products Corporation
    Inventors: Michael J. Miller, Thomas A. Wolfe, Michael J. Cheresnowsky, Tai K. Kim
  • Space thermostat for the sight handicapped
    Patent number: 4582251
    Abstract: A space thermostat for the sight handicapped has a raised pointer on the center control point adjustment means which cooperates with raised numbers representing temperature on a cover ring surrounding the control point adjustment means whereby a sight handicapped person can place a finger on the raised pointer and move the control point adjustment means by feeling the raised number to the desired temperature setting for the desired temperature in the space.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: April 15, 1986
    Assignee: Honeywell Inc.
    Inventors: James A. Odom, Jr., N. Thomas Wolfe
  • Specimen slide preparation station console or similar article
    Patent number: D248044
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: May 30, 1978
    Assignee: Honeywell Inc.
    Inventors: James A. Odom, Jr., Norbert Thomas Wolfe
  • Round thermostat guard
    Patent number: D248838
    Type: Grant
    Filed: June 9, 1976
    Date of Patent: August 8, 1978
    Assignee: Honeywell Inc.
    Inventors: Ralph E. Pasquarette, Norbert Thomas Wolfe
  • Thermostat
    Patent number: D290235
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: June 9, 1987
    Assignee: Honeywell Inc.
    Inventors: James A. Odom, Jr., N. Thomas Wolfe
  • Clock thermostat
    Patent number: D310788
    Type: Grant
    Filed: May 26, 1987
    Date of Patent: September 25, 1990
    Assignee: Honeywell Inc.
    Inventor: N. Thomas Wolfe
  • Thermostat housing
    Patent number: D366429
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: January 23, 1996
    Assignee: Honeywell Inc.
    Inventors: Andrea E. Dexter, James E. Erickson, James A. Odom, Guy M. Shoultz, N. Thomas Wolfe