Patents by Inventor Maher Y. Elsheikh

Maher Y. Elsheikh 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: 10301520
    Abstract: The present invention relates to solvent/cleaner and heat transfer fluid compositions comprising at least one hydrochlorofluoroolefin (HCFO), 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), particularly the trans-isomer. The HCFO of the present invention can be used in combination with co-agents including, hydrofluorocarbons (HFCs), hydrofluoroolefins (HFOs), hydrocarbons, ethers including hydrofluoroethers (HFEs), esters, ketones, alcohols, 1,2-transdichloroethylene and mixtures thereof.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: May 28, 2019
    Assignee: Arkema Inc.
    Inventors: Benjamin Bin Chen, Philippe Bonnet, Maher Y. Elsheikh, Brett L. Van Horn, Laurent Abbas
  • Patent number: 10072192
    Abstract: The present invention relates to formulated refrigerant systems of 1-chloro-3,3,3-trifluoropropene (R-1233zd) that are sufficiently thermally and chemically stable such that they can be effectively used sans additional stabilizers. The formulations of the present invention are particularly useful compositions for refrigeration, heat transfer and foam blowing.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: September 11, 2018
    Assignee: Arkema Inc.
    Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet
  • Patent number: 10022576
    Abstract: Hydrofluoroolefins and hydrochlorofluoroolefins contaminated with acid and/or iron compounds are purified and stabilized by contacting the haloolefin with a solid adsorbent such as alumina and then combining the purified haloolefin with one or more stabilizers such as an epoxide. The purified, stabilized haloolefins thus obtained are useful in a wide variety of end-use applications, including, for example, as refrigerants, propellants, foaming agents, fire suppression or extinguishing agents, and solvents.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: July 17, 2018
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet
  • Patent number: 9914815
    Abstract: A blowing agent for thermosetting foams is disclosed. The blowing agent is a hydrofluoroolefin (HCFO), preferably HFCO-1234yf in combination with a hydrochlorofluoroolefin (HCFO) preferably one selected from HCFO-1233zd, HCFO-1223, HCFO-1233xf and mixtures thereof. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: March 13, 2018
    Assignee: Arkema Inc.
    Inventors: Benjamin Bin Chen, Joseph S. Costa, Philippe Bonnet, Maher Y. Elsheikh, Brett L. Van Horn
  • Patent number: 9890097
    Abstract: Disclosed are the combinations containing Z and E stereoisomers of hydrofluoroolefins where the more toxic isomer is less than about 30% weight of the combination (vs the sum of Z+E), to minimize the toxicity impact in the applications they will be used for such as cooling and heat fluids, foams blowing agents or solvents. Also disclosed are means to obtain combinations containing Z and E stereoisomers of hydrofluoroolefins.
    Type: Grant
    Filed: September 30, 2015
    Date of Patent: February 13, 2018
    Assignee: Arkema Inc.
    Inventors: Philippe Bonnet, Maher Y. Elsheikh
  • Patent number: 9809515
    Abstract: A method for producing a tetrafluoroolefin, such as 2,3,3,3-tetrafluoropropene (HFO-1234yf), comprises dehydrofluorinating a pentafluoroalkane in a gas phase in the presence of a catalyst comprising chromium oxyfluoride. In a preferred embodiment, 2,3,3,3-tetrafluoropropene (HFO-1234yf) is produced by forming a catalyst comprising chromium oxyfluoride by calcining CrF3.xH2O, where x is 1-10, in the presence of a flowing gas comprising nitrogen to form a calcined chromium oxyfluoride, and dehydrofluorinating 1,1,1,2,2-pentafluoropropane (HFC-245cb) in a gas phase in the presence of the catalyst to form the 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 7, 2017
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Olga C. N. Keeley, Benjamin Bin Chen
  • Patent number: 9725384
    Abstract: A method of separating a composition containing at least one organofluorine compound from at least one inorganic compound by contacts the composition with a semipermeable membrane. Other methods separate a organofluorine compound from a composition containing at least one other organofluorine compound or chlorocarbon. Methods also include isolating a single organofluorine compound from a composition comprising a mixture of organofluorine compounds, chlorocarbons, and/or inorganic compounds.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: August 8, 2017
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, John A. Wismer, Sri R. Seshadri
  • Publication number: 20170022128
    Abstract: A method for producing a tetrafluoroolefin, such as 2,3,3,3-tetrafluoropropene (HFO-1234yf), comprises dehydrofluorinating a pentafluoroalkane in a gas phase in the presence of a catalyst comprising chromium oxyfluoride. In a preferred embodiment, 2,3,3,3-tetrafluoropropene (HFO-1234yf) is produced by forming a catalyst comprising chromium oxyfluoride by calcining CrF3.xH2O, where x is 1-10, in the presence of a flowing gas comprising nitrogen to form a calcined chromium oxyfluoride, and dehydrofluorinating 1,1,1,2,2-pentafluoropropane (HFC-245cb) in a gas phase in the presence of the catalyst to form the 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Application
    Filed: September 29, 2016
    Publication date: January 26, 2017
    Inventors: Maher Y. Elsheikh, Philippe BONNET, Olga C. N. KEELEY, Benjamin Bin CHEN
  • Patent number: 9523026
    Abstract: Disclosed is a combination of hydrofluoroolefins and/or hydrochlorofluoroolefins with stabilizers wherein the stabilizers minimize the degradation of the hydrofluoroolefins and hydrochlorofluoroolefins during storage, handling and use yet allow for atmospheric degradation. The combinations exhibit low or zero ozone depletion potential and lower global warming potential making them of interest as replacements for chlorofluorocarbons and hydrofluorocarbons. The combinations of the present invention comprise hydrofluoroolefins and/or hydrochlorofluoroolefins in combination with a stabilizer or stabilizers selected from free radical scavengers, acid scavengers, oxygen scavengers, polymerization inhibitors and combinations thereof.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: December 20, 2016
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Benjamin Bin Chen, Brett L. Van Horn, Laurent Abbas, Sri Seshadri
  • Publication number: 20160362531
    Abstract: A blowing agent for thermosetting foams is disclosed. The blowing agent is a hydrofluoroolefin (HCFO), preferably HFCO-1234ze in combination with a hydrochlorofluoroolefin (HCFO) preferably one selected from HCFO-1233zd, HCFO-1223, HCFO-1233xf and mixtures thereof. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.
    Type: Application
    Filed: August 24, 2016
    Publication date: December 15, 2016
    Inventors: Benjamin Bin CHEN, Joseph S. COSTA, Philippe BONNET, Maher Y. ELSHEIKH, Brett L. VAN HORN
  • Patent number: 9492816
    Abstract: A method for producing a tetrafluoroolefin, such as 2,3,3,3-tetrafluoropropene (HFO-1234yf), comprises dehydrofluorinating a pentafluoroalkane in a gas phase in the presence of a catalyst comprising chromium oxyfluoride. In a preferred embodiment, 2,3,3,3-tetrafluoropropene (HFO-1234yf) is produced by forming a catalyst comprising chromium oxyfluoride by calcining CrF3?xH2O, where x is 1-10, in the presence of a flowing gas comprising nitrogen to form a calcined chromium oxyfluoride, and dehydrofluorinating 1,1,1,2,2-pentafluoropropane (HFC-245cb) in a gas phase in the presence of the catalyst to form the 2,3,3,3-tetrafluoropropene (HFO-1234yf).
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: November 15, 2016
    Assignee: Arkema Inc.
    Inventors: Maher Y. Elsheikh, Philippe Bonnet, Olga C. N. Keeley, Benjamin Bin Chen
  • Publication number: 20160257867
    Abstract: The present invention relates to solvent/cleaner and heat transfer fluid compositions comprising at least one hydrochlorofluoroolefin (HCFO), 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), particularly the trans-isomer. The HCFO of the present invention can be used in combination with co-agents including, hydrofluorocarbons (HFCs), hydrofluoroolefins (HFOs), hydrocarbons, ethers including hydrofluoroethers (HFEs), esters, ketones, alcohols, 1,2-transdichloroethylene and mixtures thereof.
    Type: Application
    Filed: May 16, 2016
    Publication date: September 8, 2016
    Inventors: Benjamin Bin Chen, Philippe Bonnet, Maher Y. Elsheikh, Brett L. Van Horn, Laurent Abbas
  • Publication number: 20160152787
    Abstract: A blowing agent for thermosetting foams is disclosed. The blowing agent is a hydrofluoroolefin (HCFO), preferably HFCO-1234yf in combination with a hydrochlorofluoroolefin (HCFO) preferably one selected from HCFO-1233zd, HCFO-1223, HCFO-1233xf and mixtures thereof. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.
    Type: Application
    Filed: February 4, 2016
    Publication date: June 2, 2016
    Inventors: Benjamin Bin Chen, Joseph S. COSTA, Philippe BONNET, Maher Y. ELSHEIKH, Brett L. VAN HORN
  • Publication number: 20160152536
    Abstract: A method of separating a composition containing at least one organofluorine compound from at least one inorganic compound by contacts the composition with a semipermeable membrane. Other methods separate a organofluorine compound from a composition containing at least one other organofluorine compound or chlorocarbon. Methods also include isolating a single organofluorine compound from a composition comprising a mixture of organofluorine compounds, chlorocarbons, and/or inorganic compounds.
    Type: Application
    Filed: July 8, 2014
    Publication date: June 2, 2016
    Inventors: Maher Y. ELSHEIKH, John A. WISMER, Sri R. SESHADRI
  • Patent number: 9340758
    Abstract: The present invention relates to solvent/cleaner and heat transfer fluid compositions comprising at least one hydrochlorofluoroolefin (HCFO), 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd), particularly the trans-isomer. The HCFO of the present invention can be used in combination with co-agents including, hydrofluorocarbons (HFCs), hydrofluoroolefins (HFOs), hydrocarbons, ethers including hydrofluoroethers (HFEs), esters, ketones, alcohols, 1,2-transdichloroethylene and mixtures thereof.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: May 17, 2016
    Assignee: Arkema Inc.
    Inventors: Benjamin Bin Chen, Philippe Bonnet, Maher Y. Elsheikh, Brett L. Van Horn, Laurent Abbas
  • Patent number: 9303900
    Abstract: The invention relates to heat transfer agents and heat transfer compositions containing hydrocarbon lubricating oils and halogenated alkene heat transfer fluid that promote oil flow and provide for improved oil return. The heat transfer compositions are useful in various heat transfer systems such as refrigeration, cooling, air conditioning, chiller operations.
    Type: Grant
    Filed: April 30, 2013
    Date of Patent: April 5, 2016
    Assignee: Arkema Inc.
    Inventors: Brett L. Van Horn, Philippe Bonnet, Benjamin Bin Chen, Maher Y. Elsheikh, Richard M. Crooker
  • Publication number: 20160090462
    Abstract: A blowing agent for thermosetting foams is disclosed. The blowing agent is a hydrofluoroolefin (HCFO), preferably HFCO-1234ze in combination with a hydrochlorofluoroolefin (HCFO) preferably one selected from HCFO-1233zd, HCFO-1223, HCFO-1233xf and mixtures thereof. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.
    Type: Application
    Filed: December 10, 2015
    Publication date: March 31, 2016
    Inventors: Benjamin Bin CHEN, Joseph S. COSTA, Philippe BONNET, Maher Y. ELSHEIKH, Brett L. VAN HORN
  • Publication number: 20160090519
    Abstract: The present invention relates to formulated refrigerant systems of 1-chloro-3,3,3-trifluoropropene (R1233zd) that are sufficiently thermally and chemically stable such that they can be effectively used sans additional stabilizers. The formulations of the present invention are particularly useful compositions for refrigeration, heat transfer and foam blowing.
    Type: Application
    Filed: December 10, 2015
    Publication date: March 31, 2016
    Inventors: Brett L. Van Horn, Maher Y. ELSHEIKH, Benjamin Bin CHEN, Philippe BONNET
  • Patent number: 9279039
    Abstract: A blowing agent for thermosetting foams is disclosed. The blowing agent is a hydrofluoroolefin (HCFO), preferably HFCO-1234yf in combination with a hydrochlorofluoroolefin (HCFO) preferably one selected from HCFO-1233zd, HCFO-1223, HCFO-1233xf and mixtures thereof. The blowing agent is effective as a blowing agent in the manufacture of thermosetting foams.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: March 8, 2016
    Assignee: Arkema Inc.
    Inventors: Benjamin Bin Chen, Joseph S. Costa, Philippe Bonnet, Maher Y. Elsheikh, Brett L. Van Horn
  • Patent number: 9254468
    Abstract: The present invention relates to formulated refrigerant systems of 1-chloro-3,3,3-trifluoropropene (R-1233zd) that are sufficiently thermally and chemically stable such that they can be effectively used sans additional stabilizers. The formulations of the present invention are particularly useful compositions for refrigeration, heat transfer and foam blowing.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: February 9, 2016
    Assignee: Arkema Inc.
    Inventors: Brett L. Van Horn, Maher Y. Elsheikh, Benjamin Bin Chen, Philippe Bonnet