Patents by Inventor William Russell Welliver

William Russell Welliver 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).

  • Selective oxygen enrichment in slagging cyclone combustors
    Patent number: 6910432
    Abstract: A method for combusting a fuel in a cyclone combustor having a burner and a barrel includes: feeding a stream of the fuel into the barrel at the burner end of the barrel; feeding a stream(s) of a first oxidant (e.g., air) having a first oxygen concentration into the barrel at a first flowrate, the stream(s) of the first oxidant including a predominant stream; feeding a stream(s) of a second oxidant (e.g., oxygen) having a second oxygen concentration into the barrel at a second flowrate and in a selective manner, whereby a portion of the first oxidant combines with a portion of the second oxidant, thereby forming a combined oxidant having a combined oxygen concentration, and a portion of the first oxidant from the predominant stream continues having the first oxygen concentration; and combusting a portion of the fuel with a portion of the combined oxidant in the barrel.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: June 28, 2005
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Mark Daniel D'Agostini, William Russell Welliver, Craig J. Cain-Borgman, Kevin Boyle Fogash, Kevin M. Duffy, Francis Anthony Milcetich
  • Modified cement and concrete compositions
    Patent number: 5843222
    Abstract: A cementitious composition comprising 0.1 to about 7.5 percent by weight of a solid residual oxidation product from the combustion of an aqueous emulsion of a naturally occurring asphalt from the Orinoco Belt of Venezuela which contains from about 100 to about 1500 ppm by weight of magnesium in the form of a water soluble magnesium salt, which product from the combustion contains magnesium sulfate present in the amount of from about 0.05 to about 4 percent by weight of the cementitious composition and from about 92.5 to about 99.95 percent by weight of a hydraulic silicate cement material.
    Type: Grant
    Filed: September 26, 1997
    Date of Patent: December 1, 1998
    Assignee: Air Products and Chemicals, Inc.
    Inventors: F. MacGregor Miller, Timothy Jay Roth, William Russell Welliver
  • Bituminous compositions having enhanced performance properties
    Patent number: 5711796
    Abstract: Bituminous compositions of enhanced physical/performance properties comprising an oxidation product of a naturally occurring asphalt from the Orinoco Belt of Venezuela and the bitumen base material, and methods for their preparation.
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: January 27, 1998
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kenneth Francis Grzybowski, David Reese Jones, IV, William Russell Welliver, Timothy Jay Roth
  • Fire retardant plastic construction material
    Patent number: 5658972
    Abstract: Fire retardant plastic construction materials containing a fire retarding quantity of the oxidation product of certain asphalts.
    Type: Grant
    Filed: November 28, 1995
    Date of Patent: August 19, 1997
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Kenneth Francis Grzybowski, David Reese Jones, IV, William Russell Welliver, Timothy Jay Roth
  • Modified gypsum compositions
    Patent number: 5639298
    Abstract: A set control composition and/or interground blend of materials including a calcium sulfate material and magnesium sulfate.
    Type: Grant
    Filed: November 27, 1995
    Date of Patent: June 17, 1997
    Assignee: Air Products and Chemicals, Inc.
    Inventors: F. MacGregor Miller, Timothy Jay Roth, William Russell Welliver, John Robert Brown