Patents by Inventor Stephen M. Brandstadter

Stephen M. Brandstadter 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).

  • Systems and methods for producing fluorocarbons
    Patent number: 7368089
    Abstract: Systems and methods for producing fluorocarbons are provided that include contacting a saturated halogenated fluorocarbon with hydrogen and catalyst to produce a saturated hydrofluorocarbon and an unsaturated fluorocarbon. Aspects of the present invention describe systems and methods for contacting saturated halogenated fluorocarbons such as CF3CClFCF3 and/or CF3CCl2CF3 with hydrogen and catalyst. Systems and methods of the present invention also describe contacting saturated halogenated fluorocarbons with catalysts having one or more of K, Zr, Na, Ni, Cu, Ni, Zn, Fe, Mn, Co, Ti, and Pd. Aspects of the present invention also describe contacting saturated halogenated fluorocarbons with hydrogen under pressure. Saturated hydroflourocarbons and unsaturated fluorocarbons produced in accordance with the systems and methods of the present invention can include one or more of CF3CFHCF3, CF3CH2CF3, CF3CHClCF3, CF3CF?CF2, CF3CH?CF2, and CF3CCl?CF2.
    Type: Grant
    Filed: February 28, 2005
    Date of Patent: May 6, 2008
    Assignee: Great Lakes Chemical Corporation
    Inventors: Vicki E. Hedrick, Janet K. Boggs, Stephen M. Brandstadter, Mitchel Cohn
  • Production processes
    Patent number: 7268261
    Abstract: Methods and materials are disclosed for the recovery of valuable hydrofluorocarbons and subsequent conversion to environmentally inert compounds. More specifically methods and materials are provided for recovering hydrofluorocarbons such as HFC-227, HFC-236, HFC-245, HFC-125, HFC-134, HFC-143, HFC-152, HFC-32, HFC-23 and their respective isomers. Processes are provided for converting hydrofluorocarbons such as these to fluoromonomer precursors such as CFC-217, CFC-216, CFC-215, CFC-115, CFC-114, CFC-113, CFC-112, HCFC-22, CFC-12, CFC-13 and their respective isomers. Materials, methods and schemes are provided for the conversion of these fluoromonomer precursors to fluoromonomers such as HFP, PFP, TFP, TFE, and VDF.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: September 11, 2007
    Assignee: Great Lakes Chemical Corporation
    Inventors: Yuichi Iikubo, Vicki Hedrick, Stephen M. Brandstadter, Mitchel Cohn
  • Materials and methods for the conversion of hydrofluorocarbons
    Patent number: 7250539
    Abstract: Methods and materials are disclosed for the recovery of valuable hydrofluorocarbons and subsequent conversion to environmentally inert compounds. More specifically methods and materials are provided for recovering hydrofluorocarbons such as HFC-227, HFC-236, HFC-245, HFC-125, HFC-134, HFC-143, HFC-152, HFC-32, HFC-23 and their respective isomers. Processes are provided for converting hydrofluorocarbons such as these to fluoromonomer precursors such as CFC-217, CFC-216, CFC-215, CFC-115, CFC-114, CFC-113, CFC-112, HCFC-22, CFC-12, CFC-13 and their respective isomers. Materials, methods and schemes are provided for the conversion of these fluoromonomer precursors to fluoromonomers such as HFP, PFP, TFP, TFE, and VDF.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: July 31, 2007
    Assignee: Great Lakes Chemical Corp.
    Inventors: Yuichi Iikubo, Vicki Hedrick, Stephen M. Brandstadter, Mitchel Cohn
  • Materials and methods for the conversion of hydrofluorocarbons
    Publication number: 20040127757
    Abstract: Methods and materials are disclosed for the recovery of valuable hydrofluorocarbons and subsequent conversion to environmentally inert compounds. More specifically methods and materials are provided for recovering hydrofluorocarbons such as HFC-227, HFC-236, HFC-245, HFC-125, HFC-134, HFC-143, HFC-152, HFC-32, HFC-23 and their respective isomers. Processes are provided for converting hydrofluorocarbons such as these to fluoromonomer precursors such as CFC-217, CFC-216, CFC-215, CFC-115, CFC-114, CFC-113, CFC-112, HCFC-22, CFC-12, CFC-13 and their respective isomers. Materials, methods and schemes are provided for the conversion of these fluoromonomer precursors to fluoromonomers such as HFP, PFP, TFP, TFE, and VDF.
    Type: Application
    Filed: December 30, 2002
    Publication date: July 1, 2004
    Inventors: Yuichi Iikubo, Vicki Hedrick, Stephen M. Brandstadter, Mitchel Cohn