Patents by Inventor Mohamed Khalifa Besheesh

Mohamed Khalifa Besheesh 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: 6737525
    Abstract: N-fluorotriazinium salts, especially those of the following Formula I, are electrophilic fluorinating agents useful in fluorinating, preferably in a nitromethane solvent, carbanionic species and/or activated aromatic compounds: wherein three A moieties are independently CR, where each R is, independently, hydrogen, halogen, (primary, secondary or tertiary) amino, hydroxyl, amino, cyano, perfluorothio hydroxysulfonyl, halosulfonyl, hydrocarbyloxysulfonyl, or a carbon-containing substituent selected from the group consisting of optionally substituted hydrocarbyl, hydrocarbyloxy, hydrocarbyloxycarbonyl, and hydrocarbylthio groups; two A moieties are independently Z, where each Z is independently nitrogen or a quaternary nitrogen atom and Y is a counterion or group of counterions which are inert to chemical attack by fluorine, and oligomers or polymers thereof in which adjacent triazinium moieties are linked by a common R substituent.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: May 18, 2004
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ronald Eric Banks, Mohamed Khalifa Besheesh
  • Patent number: 6664391
    Abstract: Novel N-fluorotriazinium electrophilic fluorinating agents have the Formula I: wherein three A moieties are independently CR, where each R is, independently, hydrogen, halogen, hydroxyl, (primary, secondary or tertiary) amino, amino, cyano, perfluorothio, hydroxysulfonyl, halosulfonyl, hydrocarbyloxysulfonyl, or a carbon-containing substituent selected from the group consisting of optionally substituted hydrocarbyl, hydrocarbyloxy, hydrocarbyloxycarbonyl, and hydrocarbylthio groups, and at least one R is neither hydrogen nor halogen; two A moieties are independently Z, where each Z is independently nitrogen or a quaternary nitrogen atom and Y is a counterion or group of counterions which are inert to chemical attack by fluorine, or adjacent triazinium moieties are linked by a common R substituent to provide an oligomer or polymer.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: December 16, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ronald Eric Banks, Mohamed Khalifa Besheesh
  • Patent number: 6635760
    Abstract: Aromatic compounds having one or more electron-withdrawing substituents are fluorinated, preferably in a nitromethane solvent, by contact with tri(halo- or trifluoromethyl) substituted N-fluorotriazinium salts of the following Formula I: wherein three A moieties are independently CR, where each R is independently halogen or trifluoromethyl; two A moieties are independently Z, where each Z is independently nitrogen or a quaternary nitrogen atom and Y is a counterion or group of counterions which are inert to chemical attack by fluorine. Preferably the cation of the salt is 2,4,6-trichloro-1,3,5-triazinium.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: October 21, 2003
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Ronald Eric. Banks, Mohamed Khalifa Besheesh
  • Publication number: 20020123627
    Abstract: Novel N-fluorotriazinium electrophilic fluorinating agents have the Formula I: 1
    Type: Application
    Filed: October 23, 2001
    Publication date: September 5, 2002
    Inventors: Ronald Eric Banks, Mohamed Khalifa Besheesh
  • Publication number: 20020123657
    Abstract: N-fluorotriazinium salts, especially those of the following Formula I, are electrophilic fluorinating agents useful in fluorinating, preferably in a nitromethane solvent, carbanionic species and/or activated aromatic compounds: 1
    Type: Application
    Filed: October 23, 2001
    Publication date: September 5, 2002
    Inventors: Ronald Eric Banks, Mohamed Khalifa Besheesh
  • Publication number: 20020055662
    Abstract: Unsubstituted aromatic compounds and aromatic compounds having one or more electron-withdrawing substituents are fluorinated, preferably in a nitromethane solvent, by contact with tri(halo- or trifluoromethyl) substituted N-fluorotriazinium salts of the following Formula I: 1
    Type: Application
    Filed: October 23, 2001
    Publication date: May 9, 2002
    Inventors: Ronald Eric. Banks, Mohamed Khalifa Besheesh