Patents by Inventor Harmut Nagel

Harmut Nagel 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).

  • Method of making cerium misch-metal/cobalt magnets
    Patent number: 4144105
    Abstract: A permanent magnetic material, predominantly containing cerium misch-metal (CeMM) and cobalt, characterized by the composition:(CeMM.sub.1-x RE.sub.x).sub.1-y Sm.sub.y Co.sub.5.+-.0.2wherein0<x<0.5; 0.ltoreq.y.ltoreq.0.25,wherein cerium misch-metal approximately possesses the compositionCe.sub..alpha. La.sub..beta. Nd.sub..gamma. Pr.sub..delta., where0.45<.alpha.<0.550.20<.beta.<0.400.05<.gamma.<0.150.00<.delta.<0.05 and .alpha.+.beta.+.gamma.+.delta..perspectiveto.1.And wherein RE consists of the alloyNd.sub.A Pr.sub.B (Ce, La, Sm).sub.Cwherein A is 0.75, B is 0.22, C is less than 0.03 and A+B+C=1.
    Type: Grant
    Filed: September 9, 1976
    Date of Patent: March 13, 1979
    Assignee: BBC Brown, Boveri & Company, Limited
    Inventors: Sevi Gaiffi, Anton Menth, Harmut Nagel