Patents by Inventor Werner Theysohn

Werner Theysohn 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).

  • Solvents for NMR spectroscopy
    Patent number: 4026953
    Abstract: Organic solvents containing less than 0.2 atom percent of .sup.13 C and which preferably are at least partially deuterated are produced from .sup.13 C-depleted gaseous carbon compounds and are advantageously employed as solvents for .sup.13 C NMR spectroscopy.
    Type: Grant
    Filed: October 24, 1975
    Date of Patent: May 31, 1977
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Ludwig Pohl, Werner Theysohn, Richard Unger
  • Solvents for NMR spectroscopy
    Patent number: 3954410
    Abstract: Organic solvents containing less than 0.2 atom percent of .sup.13 C and which preferably are at least partially deuterated are produced from .sup.13 C-depleted gaseous carbon compounds and are advantageously employed as solvents for .sup.13 C NMR spectroscopy.
    Type: Grant
    Filed: October 26, 1973
    Date of Patent: May 4, 1976
    Assignee: Merck Patent Gesellschaft mit beschraenkter Haftung
    Inventors: Ludwig Pohl, Werner Theysohn, Richard Unger