Patents Represented by Attorney Edward Perkowitz

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  • Solvent suppression method for LC-NMR and high-resolution-NMR
    Patent number: 5847564
    Abstract: Improved solvent suppression in NMR data is achieved using pulse sequences wherein each of a series of selective excitation pulses are followed by a magnetic gradient pulse and a delay, where the magnetic gradient pulse amplitudes monotonically decrease by a selected fraction of the preceeding gradient pulse. Decoupling a second nucleus during selective excitation pulses has been shown to be efficacious for suppression of organic solvents.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: December 8, 1998
    Assignee: Varian Associates, Inc.
    Inventors: Stephen H. Smallcombe, Steven L. Patt, Paul A. Keifer