Patents by Inventor Andre Robert

Andre Robert 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: 7837894
    Abstract: Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a):component (b) being at least 4:1.
    Type: Grant
    Filed: August 3, 2007
    Date of Patent: November 23, 2010
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Neil Andre Roberts, Owen Ross Chambers
  • Patent number: 7799240
    Abstract: Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a):component (b) being at least 4:1.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: September 21, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Neil Andre Roberts, Owen Ross Chambers
  • Patent number: 7771610
    Abstract: Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: August 10, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Neil Andre Roberts, Owen Ross Chambers
  • Patent number: 7713434
    Abstract: Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition; a second component selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight based on the weight of the composition; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 80% isobutane in an amount of from 3% to 4% by weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: May 11, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Neil Andre Roberts, Owen Ross Chambers
  • Publication number: 20100011791
    Abstract: A heat transfer system capable of being coupled to at least one temperature controlled zone, the elements of the system comprising: (i) at least one liquid refrigerant line; (ii) at least one expansion valve selected for R22 or R422D; (iii) at least one evaporator (iv) at least one compressor; (v) at least one condenser; (vi) at least one vapor refrigerant line; and wherein all of the elements have an inlet side and an outlet side and elements (i) through (vi) are in fluid communication together and contains R422D; and the system further comprising a sensing element communicatively coupled to the outlet side of at least one evaporator and at least one expansion valve and at least one sensing element contains a fluid selected to work when R22 is in the condenser-to-evaporator circuit, or R422D. Further disclosed are methods for retrofitting R22 containing heat transfer systems, including refrigerators and air conditioners. Also disclosed are refrigerators and air conditioners containing only R422D.
    Type: Application
    Filed: December 19, 2007
    Publication date: January 21, 2010
    Inventors: Roger Nicholas Strickland, Calvin Curtis Lawson, Neil Andre Roberts, James William Dunlap, Donald Bernard Bivens, Kevin Patrick O'Shea
  • Patent number: 7648642
    Abstract: Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a): component (b) being at least 4:1.
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: January 19, 2010
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Neil Andre Roberts, Owen Ross Chambers
  • Patent number: 7641810
    Abstract: Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62-70% based on the weight of the composition selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, or a mixture thereof in an amount from 26 to 36% by weight based on the weight of the composition and mixture of dimethyether and n-butane in an amount of from 1-4% by weight based on the weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: January 5, 2010
    Inventors: Neil Andre Roberts, Owen Ross Chambers
  • Publication number: 20090127498
    Abstract: Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62-70% based on the weight of the composition selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, or a mixture thereof in an amount from 26 to 36% by weight based on the weight of the composition and mixture of dimethyether and n-butane in an amount of from 1-4% by weight based on the weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof.
    Type: Application
    Filed: May 22, 2008
    Publication date: May 21, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: NEIL ANDRE ROBERTS, Owen Ross Chambers
  • Patent number: 7486675
    Abstract: Network-units (4) comprising multicast driver devices (3) handle multicast messages efficiently by providing the multicast driver devices (3) with memory nodes (1,2) arranged in rows and/or columns, with a memory node (1,2) comprising a memory element (31-33) for memorizing a state of the memory node (1,2). Large numbers of multicast cells/groups like multicast cells and/or multicast groups can be served advantageously. M×N memory nodes (1,2) are arranged in M rows and N columns, with a memory node (1,2) comprising an engagement line (11), an unavailability line (12) and an identification line (13) per row and a request line (21), an acknowledgement line (22) and a selection line (23) per column. A memory element (31,32) memorizes a state indicating a destination port being used for a multicast cell/group, and a further memory element (33) indicates a state requesting a generation of a multicast copy for a destination port, all according to a rule of exclusiveness.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: February 3, 2009
    Assignee: ALCATEL
    Inventor: Michel André Robert Henrion
  • Publication number: 20080272330
    Abstract: Disclosed is a nonflammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition, a second component that is selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 70% isobutane in an amount of from 1% to 4% by weight and up to 5% by weight based on the weight of the composition of another fluorohydrocarbon. The composition optionally may further include at least one additive, lubricant or combination thereof.
    Type: Application
    Filed: July 11, 2008
    Publication date: November 6, 2008
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Neil Andre Roberts, Owen Ross Chambers
  • Publication number: 20080265204
    Abstract: Disclosed is a non-flammable refrigerant composition consisting of pentafluoroethane in an amount from 62% to 67% based on the weight of the composition; a second component selected from 1,1,1,2-tetrafluoroethane, 1,1,2,2-tetrafluoroethane, and mixtures thereof in an amount from 26% to 36% by weight based on the weight of the composition; and an ethylenically unsaturated or saturated hydrocarbon compound that is at least 80% isobutane in an amount of from 3% to 4% by weight of the composition. Optionally, the composition may include at least one lubricant, at least one additive or combinations thereof.
    Type: Application
    Filed: July 11, 2008
    Publication date: October 30, 2008
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: NEIL ANDRE ROBERTS, Owen Ross Chambers
  • Patent number: 7410595
    Abstract: Refrigerant composition are disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) an ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition the weight ratio of component (a):component (b) being at least 4:1.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: August 12, 2008
    Assignee: E.I. Du Pont de Nemours and Company
    Inventors: Neil Andre Roberts, Owen Ross Chambers
  • Patent number: 7276176
    Abstract: Refrigerant composition is disclosed which comprises: (a) pentafluoroethane, trifluoromethoxydifluoromethane or hexafluorocyclopropane, or a mixture of two or more thereof, in an amount of at least 75% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of from 10 to 20% by weight based on the weight of the composition and (c) and ethylenically unsaturated or saturated hydrocarbon, optionally containing one or more oxygen atoms, with a boiling point from ?50° C. to +35° C., or a mixture thereof in an amount from 1% to 4% by weight based on the weight of the composition, the weight ratio of component (a): component (b) being at least 4:1.
    Type: Grant
    Filed: October 13, 2003
    Date of Patent: October 2, 2007
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Neil André Roberts, Owen Chambers
  • Publication number: 20060147584
    Abstract: A confectionery product comprising low density chocolate surrounded by a sugar-based coating, and a process for producing the confectionery product. The confectionery product is shelf stable, even at elevated ambient temperatures.
    Type: Application
    Filed: December 23, 2003
    Publication date: July 6, 2006
    Applicant: Mars Incorporated
    Inventor: Andre Robert
  • Patent number: 6854103
    Abstract: An apparatus and method for automatically generating a visual representation of a resistance network and an equivalent point to point resistance for any set of terminals on the resistance network are provided. With the apparatus and method, a cell layout is input to a resistance/capacitance (RC) extraction tool. The RC extraction tool extracts the RC parasitics from the cell layout and inputs them into a resistance network visualization and analysis tool. From the RC parasitics, a graph data structure representation of the resistance network is generated. The graph data structure of the resistance network may then be reduced using, for example, a single layer series and parallel reduction, all layers series and parallel reduction, layer specific reduction, or the like. Following reduction, if any, a visual representation of the resistance network is generated using the graph data structure. Thereafter, equivalent point to point resistance for any set of terminals on the resistance network may be generated.
    Type: Grant
    Filed: December 30, 2002
    Date of Patent: February 8, 2005
    Assignee: LSI Logic Corporation
    Inventor: Andres Robert Teene
  • Publication number: 20040128637
    Abstract: An apparatus and method for automatically generating a visual representation of a resistance network and an equivalent point to point resistance for any set of terminals on the resistance network are provided. With the apparatus and method, a cell layout is input to a resistance/capacitance (RC) extraction tool. The RC extraction tool extracts the RC parasitics from the cell layout and inputs them into a resistance network visualization and analysis tool. From the RC parasitics, a graph data structure representation of the resistance network is generated. The graph data structure of the resistance network may then be reduced using, for example, a single layer series and parallel reduction, all layers series and parallel reduction, layer specific reduction, or the like. Following reduction, if any, a visual representation of the resistance network is generated using the graph data structure. Thereafter, equivalent point to point resistance for any set of terminals on the resistance network may be generated.
    Type: Application
    Filed: December 30, 2002
    Publication date: July 1, 2004
    Inventor: Andres Robert Teene
  • Patent number: 6655160
    Abstract: Refrigerant compositions are disclosed which comprise: (a) pentafluoroethane, octafluoropropane, trifluoromethoxydifluoromethane or hexafluoro-cyclopropane, or a mixture of two or more thereof, in an amount of at least 35% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of at least 30% by weight based on the weight of the composition and (c) n-butane or isobutane, in an amount from 1% to less than 2.3% by weight based on the weight of the composition.
    Type: Grant
    Filed: October 30, 2002
    Date of Patent: December 2, 2003
    Assignee: Rhodia Limited
    Inventor: Neil Andre Roberts
  • Publication number: 20030210695
    Abstract: A method is described for forwarding a data packet within a subnetwork (S) of interconnected cell switching nodes (1,2,3,4), surrounded by edge packet routers (A,B,C,D,E), which are further surrounded and part of a data packet network of routers. Said data packet enters said subnetwork via an ingress edge packet router (B), passes through at least one cell switching node (1), and leaves it via at least one destination egress edge packet router (A,C,D,E). The method includes the steps of associating a destination forwarding tag to said data packet, of deriving a sequence of fixed length cells for further transmission to said at least one cell switching node (1), of dynamically analyzing said destination forwarding tag for elaborating a packet cell forwarding decision applicable to all cells of said sequence, and thereby performing a subsequent transfer action of said all cells, to at least one outgoing link.
    Type: Application
    Filed: April 25, 2003
    Publication date: November 13, 2003
    Applicant: ALCATEL
    Inventor: Michel Andre Robert Henrion
  • Publication number: 20030102456
    Abstract: Refrigerant compositions are disclosed which comprise: (a) pentafluoroethane, octafluoropropane, trifluoromethoxydifluoromethane or hexafluoro-cyclopropane, or a mixture of two or more thereof, in an amount of at least 35% based on the weight of the composition, (b) 1,1,1,2- or 1,1,2,2-tetrafluoroethane, trifluoromethoxypentafluoroethane, 1,1,2,3,3-heptafluoropropane or a mixture of two or more thereof, in an amount of at least 30% by weight based on the weight of the composition and (c) n-butane or isobutane, in an amount from 1% to less than 2.3% by weight based on the weight of the composition.
    Type: Application
    Filed: October 30, 2002
    Publication date: June 5, 2003
    Inventor: Neil Andre Roberts
  • Patent number: 6469982
    Abstract: The method shares available bandwidth on a common link in a communication network among a plurality of data flows which are transmitted via the common link. The method is used by a processor and includes sharing reserved bandwidth included in the available bandwidth among the plurality of data flows, and sharing unreserved bandwidth among the plurality of data flows according to a respective unreserved data packet share which is associated to each one of the plurality of data flows. The unreserved bandwidth is included in the available bandwidth in excess of the reserved bandwidth. The sharing of the unreserved bandwidth includes associating to one of the plurality of data flows a respective adaptable administrative weight and determining the respective unreserved data packet share which is associated to the one data flow as a function of its respective adaptable administrative weight.
    Type: Grant
    Filed: July 29, 1999
    Date of Patent: October 22, 2002
    Assignee: Alcatel
    Inventors: Michel André Robert Henrion, Olivier Bonaventure, Peter Irma August Barri, Emmanuel Desmet, Johan Gabriël August Verkinderen