Patents by Inventor Walter W. Kruhler

Walter W. Kruhler 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).

  • Neodymium ultraphosphates and process for their preparation
    Patent number: 4124524
    Abstract: Neodymium ultraphosphates having the formulaMe.sub.x Nd.sub.1-x P.sub.5 O.sub.14wherein Me represents scandium, gallium, yttrium, indium, lanthanum, cerium, gadolinium, lutetium, thallium and/or uranium, and x is a number between 0 and 0.999, in the form of untwinned crystals, are prepared by heating Nd.sub.2 O.sub.3 and Me.sub.2 O.sub.3 in a vessel consisting of fine gold or of an inert, dense, carbon-based material with an excess of high-purity, anhydrous phosphoric acid or diphosphoric or polyphosphoric acid at a temperature between about 500.degree. and 600.degree. C, until the desired crystal size is achieved and then separating excess phosphoric acid or polyphosphoric acid, as the case may be.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: November 7, 1978
    Assignee: Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V.
    Inventors: Hans-Gunter Danielmeyer, Jean-Pierre Jeser, Walter W. Kruhler, Erich Schonherr, Gunter Huber