Patents by Inventor Mario J. Nappa

Mario J. Nappa 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).

  • Patent number: 7501074
    Abstract: Disclosed herein are haloketone refrigerant or heat transfer fluid compositions that are useful in refrigeration or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor systems that employ two-stage compressors or single slab/single pass heat exchangers.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: March 10, 2009
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Thomas J. Leck
  • Publication number: 20080283793
    Abstract: Disclosed herein are 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane refrigerant or heat transfer fluid compositions further comprising and a fluoroether compound, which are useful in refrigeration or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab/single pass heat exchangers.
    Type: Application
    Filed: February 6, 2008
    Publication date: November 20, 2008
    Applicant: E. I. du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert
  • Publication number: 20080224091
    Abstract: Compositions of 1,1,1,2,2,4,5,5,5-nonafluoro-4 (trifluoromethyl)-3 pentanone can be used in heat transfer refrigeration and air conditioning systems. The compositions may be in combination with fluoroethers. The compositions may be azeotropic or near azeotropic.
    Type: Application
    Filed: May 22, 2008
    Publication date: September 18, 2008
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert, Thomas J. Leck
  • Patent number: 7422699
    Abstract: Disclosed herein are 1,1,1,3,3-pentafluorobutane refrigerant or heat transfer fluid compositions further comprising hydrofluorocarbon, N-(difluoromethyl)-N,N-dimethylamine, 1,1,1,2,2-pentafluoro-2-[(pentafluoroethyl)thio]ethane r mixtures thereof, which are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab.single pass heat exchangers.
    Type: Grant
    Filed: June 5, 2007
    Date of Patent: September 9, 2008
    Assignee: E.I. Du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa
  • Publication number: 20080191162
    Abstract: Disclosed herein are 1,1,1,3,3-pentafluorobutane refrigerant or heat transfer fluid compositions further comprising hydrofluorocarbon, N-(difluoromethyl)-N,N-dimethylamine, 1,1,1,2,2-pentafluoro-2-[(pentafluoroethyl)thio]ethane or mixtures thereof, which are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab.single pass heat exchangers.
    Type: Application
    Filed: March 18, 2008
    Publication date: August 14, 2008
    Applicant: E. I. du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert
  • Publication number: 20080127659
    Abstract: Disclosed herein are refrigerant or heat transfer fluid compositions further comprising fluoroether, 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane, and hydrofluorocarbon, which are useful in refrigeration or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab/single pass heat exchangers.
    Type: Application
    Filed: February 6, 2008
    Publication date: June 5, 2008
    Applicant: E. I. du Pont de Nemours and Company
    Inventors: BARBARA HAVILAND MINOR, MARIO J. NAPPA, ALLEN C. SIEVERT
  • Patent number: 7354529
    Abstract: Disclosed herein are refrigerant or heat transfer fluid compositions further comprising fluoroether, 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane, and hydrofluorocarbon, which are useful in refrigeration or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab/single pass heat exchangers.
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: April 8, 2008
    Assignee: E. I. du Pont deNemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert
  • Patent number: 7351352
    Abstract: Disclosed herein are 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane refrigerant or heat transfer fluid compositions further comprising and a fluoroether compound, which are useful in refrigeration or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab/single pass heat exchangers.
    Type: Grant
    Filed: April 17, 2007
    Date of Patent: April 1, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert
  • Patent number: 7343981
    Abstract: The present invention relates to methods of using at least one fluoroketone selected from monobromoperfluoroketones, monohydromonobromoperfluoroketones, (perfluoroalkoxy)monobromoperfluoroketones, (fluoroalkoxy)monobromoperfluoroketones, and monochloromonobromoperfluoroketones for i) extinguishing fire by applying to the fire such a fluoroketone, ii) preventing fire in an air-containing enclosed area containing combustible materials by introducing into the area such a fluoroketone and maintaining the fluoroketone in an amount sufficient to suppress combustion of combustible materials in the enclosed area, and iii) reducing or eliminating the flammability of a flammable working fluid, by mixing between about 0.1 to about 99 percent by weight of such a fluoroketone with the flammable working fluid.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: March 18, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mario J. Nappa, Velliyur Nott Mallikarjuna Rao, Allen C. Sievert
  • Patent number: 7276177
    Abstract: Disclosed herein are hydrofluorocarbon refrigerant or heat transfer fluid compositions that are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab.single pass heat exchangers.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: October 2, 2007
    Assignee: E.I. duPont de Nemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa
  • Patent number: 7252780
    Abstract: Compositions of 1.1.1,2,2,4,5,5,5-nonafluoro-4 (trifluoromethyl)-3 pentanone can be used in heat transfer refrigeration and air conditioning systems. The compositions may be in combination with fluoroethers. The compositions may be azeotropic or near azeotropic.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: August 7, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert, Thomas J. Leck
  • Patent number: 7241398
    Abstract: Disclosed herein are 1,1,1,3,3-pentafluorobutane refrigerant or heat transfer fluid compositions further comprising hydrofluorocarbon, N-(difluoromethyl)-N,N-dimethylamine, 1,1,1,2,2-pentafluoro-2-[(pentafluoroethyl)thio]ethane or mixtures thereof, which are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab single pass heat exchangers.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: July 10, 2007
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert
  • Patent number: 7220363
    Abstract: Disclosed herein are 1,1,1,2,2,3,3,4,4-nonafluoro-4-methoxybutane refrigerant or heat transfer fluid compositions further comprising and a fluoroether compound, which are useful in refrigeration or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab/single pass heat exchangers.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: May 22, 2007
    Assignee: E.I. du Pont deNemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert
  • Patent number: 7208100
    Abstract: Disclosed here in are refrigerant or heat transfer fluid compositions comprising C4F9OC2H5 compositions and at least one hydrofluoroether, which are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab single pass heat exchangers.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: April 24, 2007
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert
  • Patent number: 7208099
    Abstract: Disclosed herein are 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane refrigerant or heat transfer fluid compositions further comprising at least one hydrofluorocarbon, which are useful in refrigeration or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage or other multi-stage centrifugal compressors or single slab single pass heat exchangers.
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: April 24, 2007
    Assignee: E. I. du Pont de Nemours & Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert
  • Patent number: 7201855
    Abstract: Disclosed herein are 1,1,1,3,3-pentafluorobutane refrigerant or heat transfer fluid compositions further comprising fluoroether, which are useful in refrigerain or air conditioning apparatus or as heat transfer fluids. The compositions of the present invention are also useful in centrifugal compressor apparatus that employ two-stage compressors or single slab single pass heat exchangers.
    Type: Grant
    Filed: January 30, 2006
    Date of Patent: April 10, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert
  • Patent number: 7153448
    Abstract: Disclosed herein are refrigerant and heat transfer fluid compositions comprising 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone and at least one hydrofluorocarbon for use in refrigeration and air conditioning systems employing a centrifugal compressor. The compositions may be azeotropic or near-azeotropic.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: December 26, 2006
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Barbara Haviland Minor, Mario J. Nappa, Allen C. Sievert, Thomas J. Leck
  • Patent number: 7129383
    Abstract: A process for the preparation of 2-chloro-1,1,1,3,3,3-heptafluoropropane is disclosed which involves (a) contacting a mixture comprising hydrogen fluoride, chlorine, and at least one starting material selected from the group consisting of halopropenes of the formula CX3CCI?CX2 and halopropanes of the formula the CX3CCIYCX3, wherein each X is independently F or Cl, and Y is H, Cl or F (provided that the number of X and Y which are F totals no more than six) with a chlorofluorination catalyst in a reaction zone to produce a product mixture comprising CF3CCIFCF3, HCI, HF. and underfluorinated halogenated hydrocarbon intermediates. The process is characterized by said chlorofluorination catalyst comprising at least one chromium-containing component selected from (i) a crystalline alpha-chromium oxide where at least 0.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: October 31, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mario J. Nappa, Velliyur Nott Mallikarjuna Rao, H. David Rosenfeld, Sekhar Subramoney, Munirpallam A. Subramanian, Allen C. Sievert
  • Patent number: 7122704
    Abstract: The present invention relates to new fluoroketone compounds from the groups monobromoperfluoroketones, monohydromonobromoperfluoroketones, (perfluoroalkoxy)monobromoperfluoroketones, (fluoroalkoxy)monobromoperfluoroketones, and monochloromonobromoperfluoroketones. These fluoroketone compounds have utility in preventing, controlling and extinguishing fire. These fluoroketone compounds have further utility as additives to reduce or eliminate the flammability of normally flammable working fluids such as refrigerants, foam blowing agents, solvents, aerosol propellants, and sterilants.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: October 17, 2006
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mario J. Nappa, Velliyur Nott Mallikarjuna Rao, Allen C. Sievert
  • Patent number: 7087788
    Abstract: The present invention relates to new fluorosulfone compounds. These fluorosulfone compounds have utility in preventing, controlling and extinguishing fire.
    Type: Grant
    Filed: August 11, 2004
    Date of Patent: August 8, 2006
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Allen C. Sievert, Mario J. Nappa, Velliyur Nott Mallikarjuna Rao, Paul R. Resnick