Patents by Inventor Brooks S. Lunger

Brooks S. Lunger 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).

  • Azeotropic and azeotrope-like compositions of a hexafluoropropane and C5 hydrocarbon
    Patent number: 5635098
    Abstract: This invention relates to compositions that include at least one hydrocarbon and at least one fluorinated species. Such compositions may be used as refrigerants, cleaning agents, expansion agents for foams such as polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, displacement drying agents, among others.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: June 3, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Brooks S. Lunger, Glenn S. Shealy
  • Composition with pentafluoroethane, difuoromethane, and a C4-C9 hydrocarbon
    Patent number: 5624596
    Abstract: This invention relates to compositions that include at least one hydrocarbon and at least one fluorinated species. Such compositions may be used as refrigerants, cleaning agents, expansion agents for foams such as polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, displacement drying agents, among others.
    Type: Grant
    Filed: May 8, 1995
    Date of Patent: April 29, 1997
    Assignee: E. I. Dupont de Nemours and Company
    Inventors: Brooks S. Lunger, Glenn S. Shealy
  • Azeotropic and azeotrope-like compositions of a hydrofluorocarbon and a hydrocarbon
    Patent number: 5458798
    Abstract: This invention relates to compositions that include at least one hydrocarbon and at least one fluorinated species. Such compositions may be used as refrigerants, cleaning agents, expansion agents for foams such as polyolefins and polyurethanes, aerosol propellants, heat transfer media, gaseous dielectrics, fire extinguishing agents, power cycle working fluids, polymerization media, particulate removal fluids, carrier fluids, buffing abrasive agents, displacement drying agents, among others.
    Type: Grant
    Filed: January 3, 1994
    Date of Patent: October 17, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Brooks S. Lunger, Glenn S. Shealy
  • Hydrofluorocarbon compositions
    Patent number: 5417871
    Abstract: Refrigerant compositions include mixtures of difluoromethane and isobutane, butane, propylene or cyclopropane; pentafluoroethane and propylene or cyclopropane; 1,1,2,2-tetrafluoroethane and propane; 1,1,1,2-tetrafluoroethane and cyclopropane; 1,1,1-trifluoroethane and DME or propylene; 1,1-difluoroethane and propane, isobutane, butane or cyclopropane; fluoroethane and propane or cyclopropane; 1,1,1,2,2,3,3-heptafluoropropane and butane, cyclopropane, DME, isobutane or propane; or 1,1,1,2,3,3,3-heptafluoropropane and butane, cyclopropane, isobutane or propane.
    Type: Grant
    Filed: March 11, 1994
    Date of Patent: May 23, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Barbara H. Minor, Donald B. Bivens, Brooks S. Lunger
  • Halocarbon blends
    Patent number: 5262077
    Abstract: Azeotrope-like blends are disclosed comprising effective amounts of 1,1,1,2-tetrafluoroethane (HFC-134a), 1,1-difluoroethane (HFC-152a) and a halocarbon selected from the group consisting of 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124), 2-chloro-1,1,2,2-tetrafluoroethane (HCFC-124a), 1-hydroperfluoropropane (HFC-227ca), 2-hydroperfluoropropane (HFC-227ea), and mixtures thereof.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: November 16, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Donald B. Bivens, Brooks S. Lunger
  • Azeotropic and azeotrope-like compositions of 1,1,2,2-tetrafluoroethane
    Patent number: 5182040
    Abstract: The azeotropic and azeotrope-like compositions of 1,1,1,2-tetrafluoroethane and one of 1,1-difluoroethane, 1-chloro-1,1,-difluoroethane, dimethyl ether, perfluorocyclobutane, n-butane, isobutane and 1,1,1,2,3,3,3-heptafluoropropane, and their use as refrigerants, aerosol propellants and blowing agents for polymer foams are disclosed. The azeotropic and azeotrope-like compositions of 1,1,1,2-tetrafluoroethane and one of perfluorocyclobutane and 1,1,1,2,3,3,3-heptafluoropropane are also useful as fire extinguishants.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: January 26, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Philip L. Bartlett, Donald B. Bivens, Brooks S. Lunger, Akimichi Yokozeki