Patents by Inventor Helge Rau

Helge Rau 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).

  • Publication number: 20160023128
    Abstract: The invention relates to certain non-flammable compositions containing 1,1,1,3,3-pentafluorobutane (R365mfc), 1,2-dichloroethylene and a hydrofluoroether, to mixtures containing these compositions and to the use of these non-flammable compositions or these mixtures, especially as precision cleaning agents for solid surfaces and for flushing, especially of refrigeration systems.
    Type: Application
    Filed: March 7, 2014
    Publication date: January 28, 2016
    Inventors: Ercan UENVEREN, Helge RAU, Beate MESCHONAT
  • Publication number: 20150315531
    Abstract: Non-flammable ternary compositions and use of these compositions. The invention relates to certain non-flammable compositions containing, 1,1,3,3-pentafluorobutane (R365mfc), 1,2-dichloroethylene and a hydrofluoroether, to mixtures containing these compositions and to the use of these non-flammable compositions or these mixtures, especially as precision cleaning agents for solid surfaces and for flushing, especially of refrigeration systems.
    Type: Application
    Filed: December 20, 2013
    Publication date: November 5, 2015
    Inventors: Ercan UENVEREN, Helge RAU
  • Patent number: 8877087
    Abstract: Nonflammable compositions comprising fluorinated compounds selected from the group consisting of hydrofluoroalkanes, hydrofluoroalkenes, partially or perfluorinated aromatic compounds, hydrofluoroethers, and fluoroketones; 1,2-dichloroethylene, especially trans-1,2-dichloroethylene; and a stabilizer. These non-flammable compositions which preferably contain 1,1,1,3,3-pentafluorobutane, can be used especially as solvents for cleaning and defluxing electronic components and for degreasing metals. The compositions further may comprise a propellant, e.g. 1,1,1,2-tetrafluoroethane. These compositions are especially suitable as flushing agent.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: November 4, 2014
    Assignee: Solvay Fluor GmbH
    Inventors: Michael Marhold, Helge Rau, Karsten Borner, Christoph Meurer
  • Publication number: 20140319407
    Abstract: Hydrofluorocarbon compositions which consist of more than 50 to less than 60% wt of HFO-1234yf, and of more than (40) to less than 50 wt % HFC-134a are useful as drop-in substitutes for R-404A, R-507 and R-22. The invention also concerns azeotropic hydrofluorocarbon compositions consisting equal to or more than 56.3 to equal to or less than 58.0 wt of HFO-1234yf, and equal to or more than 42.0 to equal to or less than 43.7% wt of HFC-134a.
    Type: Application
    Filed: November 27, 2012
    Publication date: October 30, 2014
    Applicant: SOLVAY SA
    Inventors: Felix Flohr, Helge Rau
  • Patent number: 8758640
    Abstract: Nonflammable compositions comprising fluorinated compounds selected from the group consisting of hydrofluoroalkanes, hydrofluoroalkenes, partially or perfluorinated aromatic compounds, hydrofluoroethers, and fluoroketones; 1,2-dichloroethylene, especially trans-1,2-dichloroethylene; and a stabilizer. These non-flammable compositions which preferably contain 1,1,1,3,3-pentafluorobutane, can be used especially as solvents for cleaning and defluxing electronic components and for degreasing metals. The compositions further may comprise a propellant, e.g. 1,1,1,2-tetrafluoroethane. These compositions are especially suitable as flushing agent.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: June 24, 2014
    Assignee: Solvay Fluor GmbH
    Inventors: Michael Marhold, Helge Rau, Karsten Borner, Christoph Meurer
  • Patent number: 8444873
    Abstract: A composition which comprises or consists of more than 75 to less than 80 wt. % of pentafluoroethane (HFC-125); more than 17 to less than 22.7 wt. % of 1,1,1,2-tetrafluoroethane (HFC-134a); and more than 2.3 to less than 3.0 wt. % of n-butane (R600).
    Type: Grant
    Filed: June 2, 2010
    Date of Patent: May 21, 2013
    Assignee: Solvay Fluor GmbH
    Inventors: Christoph Meurer, Felix Flohr, Helge Rau
  • Patent number: 8318038
    Abstract: The invention relates to non-flammable compositions comprising fluorinated compounds selected from the group consisting of hydrofluoroalkanes, hydrofluoroalkenes, partially or perfluorinated aromatic compounds, hydrofluoroethers or fluoroketones, 1,2-dichloroethylene, especially trans-1,2-dichloroethylene, and a stabilizer. These non-flammable compositions which preferably contain 1,1,1,3,3-pentafluorobutane, can be used especially as solvents for cleaning and defluxing electronic components and for degreasing metals. The compositions further may comprise a propellant, e.g. 1,1,1,2-tetrafluoroethane. These compositions are especially suitable as flushing agent.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: November 27, 2012
    Assignee: SOLVAY FLUOR GmbH
    Inventors: Michael Marhold, Helge Rau, Karsten Börner, Christoph Meurer
  • Publication number: 20100314574
    Abstract: A composition which comprises or consists of more than 75 to less than 80 wt. % of pentafluoroethane (HFC-125); more than 17 to less than 22.7 wt. % of 1,1,1,2-tetrafluoroethane (HFC-134a); and more than 2.3 to less than 3.0 wt. % of n-butane (R600).
    Type: Application
    Filed: June 2, 2010
    Publication date: December 16, 2010
    Applicant: SOLVAY FLUOR GMBH
    Inventors: Christoph MEURER, Felix FLOHR, Helge RAU
  • Publication number: 20100029531
    Abstract: The invention relates to non-flammable compositions comprising fluorinated compounds selected from the group consisting of hydrofluoroalkanes, hydrofluoroalkenes, partially or perfluorinated aromatic compounds, hydrofluoroethers or fluoroketones, 1,2-dichloroethylene, especially trans-1,2-dichloroethylene, and a stabilizer. These non-flammable compositions which preferably contain 1,1,1,3,3-pentafluorobutane, can be used especially as solvents for cleaning and defluxing electronic components and for degreasing metals. The compositions further may comprise a propellant, e.g. 1,1,1,2-tetrafluoroethane. These compositions are especially suitable as flushing agent.
    Type: Application
    Filed: February 4, 2008
    Publication date: February 4, 2010
    Applicant: SOLVAY FLUOR GMBH
    Inventors: Michael Marhold, Helge Rau, Karsten Borner, Christoph Meurer
  • Publication number: 20100025619
    Abstract: Compounds of general formula (I) CxFy—O—CF?CFW wherein x is 1, 2, 3, 4, 5 or 6, y=2x+1, and wherein W is F, CF3, C2F5, C3F7, or formula (II), CxFy—O—CX?CYZ wherein x and y have the meaning given above, X stands for H or F, Y stands for H or F and Z stands for H, F. CF3 or C2F5 with the proviso that at least one of X, Y or Z are H and that not more than 2 hydrogen atoms are contained in the compound of general formula (II), are suitable as or part of refrigerants, solvents, blowing agents, fire extinguishants, ORC liquids, heat transformer liquids, heat pipe liquids or aerosol-producing gases. Preferred co-refrigerants are CF3I, HFC-134a or one or more pentafluoropropenes.
    Type: Application
    Filed: July 11, 2007
    Publication date: February 4, 2010
    Applicant: SOLVAY FLUOR GMBH
    Inventors: Marcello Riva, Christoph Meurer, Felix Flohr, Helge Rau
  • Patent number: 5795851
    Abstract: A process for inhibiting the corrosion of metals, in which the metals are treated with anti-corrosion agents, corrosion inhibiting agents or metal treating agents which are composed of or which contain lactobionic acid N-alkylamides and/or lactobionic acid alkylamine amides and/or di-lactobionic acid alkyl diamides, in which the saturated or unsaturated alkyl group bonded to the amide function has a chain length of more than 18 carbon atoms.
    Type: Grant
    Filed: August 8, 1997
    Date of Patent: August 18, 1998
    Assignee: Solvay Deutschland GmbH
    Inventors: Klaus Gerling, Helge Rau, Kornelia Wendler, Karlheinz Uhlig
  • Patent number: 5779939
    Abstract: Corrosion prevention compositions which contain lactobionic acid N-alkylamides, and further having a pH below 9.0, are described. In particular, lactobionic acid N-alkylamides in which the saturated or unsaturated alkyl group bonded via the amide function has a chain length of 8 to 18 carbon atoms show a good corrosion-inhibiting action. The use of lactobionic acid N-alkylamides in corrosion prevention compositions and metalworking compositions is also described.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: July 14, 1998
    Assignee: Solvay Deutschland GmbH
    Inventors: Klaus-Guenter Gerling, Helge Rau, Kornelia Wendler, Petra Schwarz, Karlheinz Uhlig
  • Patent number: 5756003
    Abstract: Corrosion prevention compositions which contain lactobionic acid N-alkylamides are described. In particular, lactobionic acid N-alkylamides in which the saturated or unsaturated alkyl group bonded via the amide function has a chain length of 8 to 18 carbon atoms show a good corrosion-inhibiting action. The use of lactobionic acid N-alkylamides in corrosion prevention compositions and metalworking compositions is also described.
    Type: Grant
    Filed: February 4, 1997
    Date of Patent: May 26, 1998
    Assignee: Solvay Deutschland GmbH
    Inventors: Klaus-Guenter Gerling, Helge Rau, Kornelia Wendler, Petra Schwarz, Karlheinz Uhlig