Patents by Inventor Paul Vasos

Paul Vasos 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).

  • Singlet-state exchange NMR spectroscopy for the study of very slow dynamic processes
    Patent number: 7626386
    Abstract: A nuclear magnetic resonance (NMR) method for singlet-state exchange NMR-spectroscopy comprises steps of excitation of single-quantum in-phase coherences, generation of single-quantum anti-phase coherences, excitation of zero-quantum coherences ZQx and/or longitudinal two-spin order 2IzSz (=“ZZ order”) using a ?/4 pulse, reversal of the sign of the zero-quantum coherences ZQx under the effect of the difference of the chemical shifts of the examined spins, transformation of the zero-quantum coherences ZQx and/or longitudinal two-spin ZZ order into singlet-state populations by means of RF irradiation during a mixing period ?m, reconversion of the singlet-state populations remaining at the end of the mixing period ?m into zero-quantum coherences ZQx and/or ZZ order, reversal of the sign of the zero-quantum coherences ZQx under the effect of the difference of the chemical shifts of the examined spins, and reconversion of zero-quantum coherences ZQx and/or ZZ order into single-quantum anti-phase coherences.
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: December 1, 2009
    Assignees: Ecole Polytechnique Fédérale de Lausanne (EPFL), Bruker BioSpin AG
    Inventors: Geoffrey Bodenhausen, Paul Vasos, Riddhiman Sarkar
  • Singlet-state exchange NMR spectroscopy for the study of very slow dynamic proceses
    Publication number: 20090039883
    Abstract: A nuclear magnetic resonance (NMR) method for singlet-state exchange NMR-spectroscopy comprises steps of excitation of single-quantum in-phase coherences, generation of single-quantum anti-phase coherences, excitation of zero-quantum coherences ZQx and/or longitudinal two-spin order 2IzSz (=“ZZ order”) using a ?/4 pulse, reversal of the sign of the zero-quantum coherences ZZQx under the effect of the difference of the chemical shifts of the examined spins, transformation of the zero-quantum coherences ZZQx and/or longitudinal two-spin ZZ order into singlet-state populations by means of RF irradiation during a mixing period ?m reconversion of the singlet-state populations remaining at the end of the mixing period ?m into zero-quantum coherences ZZQx and/or ZZ order, reversal of the sign of the zero-quantum coherences ZZQx under the effect of the difference of the chemical shifts of the examined spins, and reconversion of zero-quantum coherences ZZQx and/or ZZ order into single-quantum anti-phase coherences.
    Type: Application
    Filed: June 14, 2007
    Publication date: February 12, 2009
    Inventors: Geoffrey Bodenhausen, Paul Vasos, Riddhiman Sarkar