Patents by Inventor David Charles Griffiths

David Charles Griffiths 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: 20230293792
    Abstract: A dialysis system (e.g., a hemodialysis (HD) system) can be designed to operate in alternative environments, such as disaster relief settings or underdeveloped regions. The dialysis system can include a solar panel for generating electricity to power the dialysis machine and an atmospheric water generator for extracting water from ambient air. The extracted water can be used to generate dialysate and saline on-site. One or more of the components of the dialysis machine can be discrete components that are configured to facilitate fast shipping and simple on-site assembly (e.g., at a remote location). In some implementations, the discrete components may be configured to be attached to an existing dialysis system (e.g., a dialysis system designed for operation in a traditional environment) to permit the dialysis system to operate in an alternative environment.
    Type: Application
    Filed: May 30, 2023
    Publication date: September 21, 2023
    Inventors: Roger Caluya, Martin Joseph Crnkovich, Bert D. Egley, David Charles Griffith, Jr., Roland Levin, Houssein Nasseri, Kulwinder S. Plahey, David Yuds
  • Patent number: 11701456
    Abstract: A dialysis system (e.g., a hemodialysis (HD) system) can be designed to operate in alternative environments, such as disaster relief settings or underdeveloped regions. The dialysis system can include a solar panel for generating electricity to power the dialysis machine and an atmospheric water generator for extracting water from ambient air. The extracted water can be used to generate dialysate and saline on-site. One or more of the components of the dialysis machine can be discrete components that are configured to facilitate fast shipping and simple on-site assembly (e.g., at a remote location). In some implementations, the discrete components may be configured to be attached to an existing dialysis system (e.g., a dialysis system designed for operation in a traditional environment) to permit the dialysis system to operate in an alternative environment.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: July 18, 2023
    Assignee: Fresenius Medical Care Holdings, Inc.
    Inventors: Roger Caluya, Martin Joseph Crnkovich, Bert D. Egley, David Charles Griffith, Jr., Roland Levin, Houssein Nasseri, Kulwinder S. Plahey, David Yuds
  • Publication number: 20200222611
    Abstract: A dialysis system (e.g., a hemodialysis (HD) system) can be designed to operate in alternative environments, such as disaster relief settings or underdeveloped regions. The dialysis system can include a solar panel for generating electricity to power the dialysis machine and an atmospheric water generator for extracting water from ambient air. The extracted water can be used to generate dialysate and saline on-site. One or more of the components of the dialysis machine can be discrete components that are configured to facilitate fast shipping and simple on-site assembly (e.g., at a remote location). In some implementations, the discrete components may be configured to be attached to an existing dialysis system (e.g., a dialysis system designed for operation in a traditional environment) to permit the dialysis system to operate in an alternative environment.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 16, 2020
    Inventors: Roger Caluya, Martin Joseph Crnkovich, Bert D. Egley, David Charles Griffith, Roland Levin, Houssein Nasseri, Kulwinder S. Plahey, David Yuds
  • Patent number: 10632242
    Abstract: A dialysis system (e.g., a hemodialysis (HD) system) can be designed to operate in alternative environments, such as disaster relief settings or underdeveloped regions. The dialysis system can include a solar panel for generating electricity to power the dialysis machine and an atmospheric water generator for extracting water from ambient air. The extracted water can be used to generate dialysate and saline on-site. One or more of the components of the dialysis machine can be discrete components that are configured to facilitate fast shipping and simple on-site assembly (e.g., at a remote location). In some implementations, the discrete components may be configured to be attached to an existing dialysis system (e.g., a dialysis system designed for operation in a traditional environment) to permit the dialysis system to operate in an alternative environment.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: April 28, 2020
    Assignee: Fresenius Medical Care Holdings, Inc.
    Inventors: Roger Caluya, Martin Joseph Crnkovich, Bert D. Egley, David Charles Griffith, Jr., Roland Levin, Houssein Nasseri, Kulwinder S. Plahey, David Yuds
  • Publication number: 20170189597
    Abstract: A dialysis system (e.g., a hemodialysis (HD) system) can be designed to operate in alternative environments, such as disaster relief settings or underdeveloped regions. The dialysis system can include a solar panel for generating electricity to power the dialysis machine and an atmospheric water generator for extracting water from ambient air. The extracted water can be used to generate dialysate and saline on-site. One or more of the components of the dialysis machine can be discrete components that are configured to facilitate fast shipping and simple on-site assembly (e.g., at a remote location). In some implementations, the discrete components may be configured to be attached to an existing dialysis system (e.g., a dialysis system designed for operation in a traditional environment) to permit the dialysis system to operate in an alternative environment.
    Type: Application
    Filed: October 4, 2016
    Publication date: July 6, 2017
    Inventors: Roger Caluya, Martin Joseph Crnkovich, Bert D. Egley, David Charles Griffith, JR., Roland Levin, Houssein Nasseri, Kulwinder S. Plahey, David Yuds
  • Patent number: 7518027
    Abstract: A process for the production of a mono-olefin from a feedstock comprising a paraffinic hydrocabon which process comprises a) partially combusting at a pressure of at least (15) barg a mixture of the hydrocarbon feed and a molecular oxygen-containing gas in contact with a catalyst capable of supporting combustion beyond the normal fuel rich limit of flammability where they are reacted to form a product comprising one or more mono-olefin(s), carbon monoxide and hydrogen and b) recovering the one or more olefin(s).
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: April 14, 2009
    Assignee: Innovene Europe Limited
    Inventors: Andrew Lindsay Burns, David Charles Griffiths, William Terence Woodfin
  • Patent number: 7291760
    Abstract: A process for the production of an olefin comprising partially combusting in a reaction zone a mixture of a hydrocarbon and an oxygen-containing gas in the presence of a catalyst which is capable of supporting combustion beyond the fuel rich limit of flammability to produce the olefin, wherein the superficial feed velocity of said mixture is at least 250 cm s?-1? at standard temperature and operating pressure with the proviso that where the catalyst is an unsupported catalyst, the superficial feed velocity of said mixture is at least 300 cm s?1 at standard temperature and operating pressure.
    Type: Grant
    Filed: November 21, 2006
    Date of Patent: November 6, 2007
    Assignee: Ineos Europe Limited
    Inventors: David Charles Griffiths, Ian Raymond Little, Brian Edward Messenger, Ian Allan Beattie Reid
  • Patent number: 7223897
    Abstract: A process for the production of an olefin from a hydrocarbon by autothermal cracking, which process comprises: partially combusting the hydrocarbon and an oxygen-containing gas in the presence of a catalyst, wherein the stoichiometric ratio of hydrocarbon to oxygen is 5 to 16 times the stoichiometric ratio of hydrocarbon to oxygen required for complete combustion of the hydrocarbon to carbon dioxide and water, characterised in that the catalyst comprises palladium and at least one further metal being a Group IIIA, Group IVA, VA, a transition metal or a lanthanide.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: May 29, 2007
    Assignee: Ineos Europe Limited
    Inventors: John William Couves, David Charles Griffiths, Brian Edward Messenger, Ian Allan Beattie Reid
  • Patent number: 7169962
    Abstract: Process for the production of an olefin comprising partially combusting in a reaction zone a mixture of a hydrocarbon and an oxygen-containing gas in the presence of a catalyst which is capable of supporting combustion beyond the fuel rich limit of flammability to produce the olefin. The superficial feed velocity of the mixture is at least 250 cm s?1 at standard temperature and operating pressure, with the proviso that where the catalyst is an unsupported catalyst, the superficial feed velocity of the mixture is at least 300 cm s?1 at standard temperature and operating pressure. The process is carried out at a pressure of at least 1.3 bara and the reaction zone is not externally heated.
    Type: Grant
    Filed: July 4, 2001
    Date of Patent: January 30, 2007
    Assignee: Ineos Europe Limited
    Inventors: David Charles Griffiths, Ian Raymond Little, Brian Edward Messenger, Ian Allan Beattie Reid
  • Patent number: 7164053
    Abstract: Process for the production of an olefin from a hydrocarbon, which process comprises contacting the hydrocarbon and a molecular oxygen-containing gas with a catalyst under auto-thermal conditions sufficient to produce the olefin. The catalyst comprises a component (a) and a component (b), wherein component (a) is at least one metal selected from Group IIIA, Group IVA, Group VA and the transition metals and component (b) is at least one transition metal. The catalyst does not comprise either palladium or platinum.
    Type: Grant
    Filed: February 22, 2001
    Date of Patent: January 16, 2007
    Assignee: Ineos Europe Limited
    Inventors: Gavin Thomas Binmore, David Charles Griffiths, Brian Edward Messenger, Ian Allan Beattie Reid
  • Patent number: 6903140
    Abstract: Process for the conversion of synthesis gas to a product comprising liquid hydrocarbons and oxygenates. The process includes contacting synthesis gas at an elevated temperature and pressure with a mixed particulate catalyst comprising a mixture of a particulate Fischer-Tropsch catalyst and a particulate oxygenate synthesis catalyst.
    Type: Grant
    Filed: May 17, 2002
    Date of Patent: June 7, 2005
    Assignees: BP Exploration Operating C Company Limited, Davy Process Technology Limited
    Inventors: Josephus Johannes Helena Maria Font Freide, Stephen Anthony Leng, David Charles Griffiths
  • Publication number: 20040157941
    Abstract: A process for the conversion of synthesis gas to a product comprising liquid hydrocarbons and oxygenates wherein said process comprises contacting synthesis gas at an elevated temperature and pressure with a mixed particulate catalyst comprising a mixture of a particulate Fischer-Tropsch catalyst and a particulate oxygenate synthesis catalyst.
    Type: Application
    Filed: October 29, 2003
    Publication date: August 12, 2004
    Inventors: Josephus Johannes Helena Maria Font Freide, Stephen Anthony Leng, David Charles Griffiths
  • Publication number: 20040131984
    Abstract: A process for operating a combustion burner employing a combustion mixture of a carbonaceous fuel, hydrogen and a molecular oxygen-containing gas and at least one solid combustion catalyst is disclosed.
    Type: Application
    Filed: January 6, 2003
    Publication date: July 8, 2004
    Inventors: Larry C. Satek, Martin E. Carrera, I. A. B. Reid, Geoffrey B. Smith, David Charles Griffiths
  • Publication number: 20040039068
    Abstract: A process for the production of an olefin comprising partially combusting in a reaction zone a mixture of a hydrocarbon and an oxygen-containing gas in the presence of a catalyst which is capable of supporting combustion beyond the fuel rich limit of flammability to produce the olefin, wherein the superficial feed velocity of said mixture is at least 250 cm s?—1? at standard temperature and operating pressure with the proviso that where the catalyst is an unsupported catalyst, the superficial feed velocity of said mixture is at least 300 cm s−1 at standard temperature and operating pressure.
    Type: Application
    Filed: June 16, 2003
    Publication date: February 26, 2004
    Inventors: David Charles Griffiths, Ian Raymond Little, Brian Edward Messenger, Ian Allan Beattie Reid
  • Publication number: 20030092953
    Abstract: A process for the production of an olefin from a hydrocarbon, which process comprises: partially combusting the hydrocarbon and an oxygen-containing gas in the presence of a catalyst, characterised in that the catalyst comprises palladium and at least one further metal, said further metal being a Group IIA, Group IVA, VA or a transition metal.
    Type: Application
    Filed: September 19, 2002
    Publication date: May 15, 2003
    Inventors: John William Couves, David Charles Griffiths, Brian Edward Messenger, Ian Allan Beattie Reid
  • Patent number: 6555721
    Abstract: Process for producing a mono-olefin from a feedstock containing a paraffinic hydrocarbon comprising feeding a gaseous paraffinic hydrocarbon-containing feedstock and a molecular oxygen-containing gas to an autothermal cracker wherein they are reacted in the presence of a catalyst capable of supporting combustion beyond the normal fuel rich limit of flammability to produce a product comprising one or more mono-olefin(s) and synthesis gas, and wherein the autothermal cracker is operated at a temperature greater than 650° C. and at a pressure of greater than 5 bar absolute. The product is separated into a high pressure fuel gas stream comprising methane, carbon monoxide and hydrogen and a stream comprising one or more olefins and recovering the one or more olefin(s).
    Type: Grant
    Filed: March 11, 2002
    Date of Patent: April 29, 2003
    Assignee: BP Chemicals Limited
    Inventors: David Charles Griffiths, Barry Martin Maunders, William Terence Woodfin
  • Publication number: 20030055306
    Abstract: A process for the production of an olefin from a hydrocarbon, which process comprises: partially combusting the hydrocarbon and an oxygen-containing gas in the presence of a catalyst, characterised in that the catalyst comprises platinum and at least one further metal, said further metal being a Group IIIA, Group IVA, VA or a transition metal; wherein said catalyst is: a) not a platinum catalyst consisting essentially of platinum modified with Sn, Cu or mixtures thereof, and b) not a platinum catalyst consisting essentially of platinum modified with Sb or a mixture of Sb and Sn.
    Type: Application
    Filed: September 4, 2002
    Publication date: March 20, 2003
    Inventors: John Wiliiam Couves, David Charles Griffiths, Brian Edward Messenger
  • Publication number: 20020143220
    Abstract: A process for the production of a mono-olefin from a feedstock comprising a paraffinic hydrocarbon which process comprises the steps of: (a) feeding the feedstock and a molecular oxygen-containing gas to an autothermal cracker wherein they are reacted by oxidative dehydrogenation to form a product comprising one, or more, mono-olefin(s) and synthesis gas, (b) separating the product from step (a) into a synthesis gas-containing stream and one, or more, olefins and recovering the one, or more, olefin(s), (c) contacting synthesis gas-containing stream separated in step (b) with either, (i) a catalyst for the conversion of synthesis gas to methanol under conditions whereby synthesis gas is converted to methanol; or (ii) a catalyst for the water gas shift reaction under conditions whereby carbon monoxide in the synthesis gas is converted by reaction with water to hydrogen and carbon dioxide and thereafter recovering hydrogen; or (iii) a catalyst for the conversion of synthesis gas to hydrocarbons under conditions
    Type: Application
    Filed: March 11, 2002
    Publication date: October 3, 2002
    Applicant: BP Chemicals Limited
    Inventors: David Charles Griffiths, Barry Martin Maunders, William Terence Woodfin
  • Patent number: 6433234
    Abstract: A process for the production of olefins from a hydrocarbon comprising the steps of: a) providing a first feed stream comprising a gaseous fuel and an oxygen-containing gas; b) contacting the first feed stream with a first catalyst under conditions so as to produce a product stream and unreacted oxygen; c) providing a second feed stream of hydrocarbon feedstock; and d) contacting the second feed stream, the product stream of step b) and the unreacted oxygen step b) with a second catalyst which is capable of supporting oxidation, thereby consuming at least a part of the unreacted oxygen to produce an olefin product.
    Type: Grant
    Filed: September 11, 2000
    Date of Patent: August 13, 2002
    Assignee: BP Chemicals Limited
    Inventors: David Charles Griffiths, Cord Oehlers, Ian Allan Beattie Reid
  • Patent number: 6395944
    Abstract: Process for the production of a mono-olefin and a hydrocarbon fraction boiling in the diesel range in which (I) a gaseous paraffinic hydrocarbon-containing feedstock and a molecular oxygen-containing gas are fed to an autothermal cracker wherein they are reacted in the presence or absence of a catalyst capable of supporting combustion beyond the normal fuel rich limit of flammability under conditions whereby the feedstock is oxidatively dehydrogenated to a product comprising one or more mono-olefin(s) and synthesis gas. The product from step (I) is separated into synthesis gas and one or more mono-olefin(s) and the one or more mono-olefin(s) are recovered. Synthesis gas separated in step (II), optionally together with additional synthesis gas, is fed to a Fischer Tropsch (FT) reactor containing an FT catalyst wherein the synthesis gas is reacted under FT conditions to produce an FT product containing naphtha and hydrocarbons boiling in the diesel range.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: May 28, 2002
    Assignee: BP Chemicals Limited
    Inventors: David Charles Griffiths, Barry Martin Maunders, William Terence Woodfin