Patents by Inventor Wilhelm Lehmer

Wilhelm Lehmer 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).

  • Intermittent vibration in fractional crystallization
    Patent number: 4178776
    Abstract: An inspissate of a solution having a solvent which can be crystallized out by cooling is passed into contact with an internally cooled surface through which a coolant is circulated. Relative vibration is established between the solution to be cooled and the surface with at least the vibration of the surface being interrupted periodically or aperiodically. The solution and the surface can be vibrated separately in alternating periods.
    Type: Grant
    Filed: June 2, 1977
    Date of Patent: December 18, 1979
    Assignee: Linde Aktiengesellschaft
    Inventors: Wolfgang Baldus, Wilhelm Lehmer
  • Method of and apparatus for the concentration of crystallizable liquid
    Patent number: 4170881
    Abstract: Crystallizable liquid solutions (i.e. solutions with crystallizable solvents) are concentrated by passing them between two cooled surfaces in a direction transverse to the action of gravity, the crystals being removed from the liquid substantially continuously over the entire length of the path. The surfaces are vibrated to prevent accumulation of crystals.
    Type: Grant
    Filed: June 2, 1977
    Date of Patent: October 16, 1979
    Assignee: Linde Aktiengesellschaft
    Inventors: Udo Lang, Franz Gruber, Satish Anand, Wilhelm Lehmer