Patents by Inventor Petrus Santa Cruz

Petrus Santa Cruz 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).

  • Glass-ceramic materials especially for lasers and optical amplifiers, doped with rare earths
    Patent number: 5858891
    Abstract: A glass-ceramic material that is doped with rare-earths and is especially suitable for lasers and optical amplifiers is disclosed. The glass-ceramic material is optically non-scattering, and the doping with rare earths is essentially in the microcrystalline phase. The glass-ceramic material is preferably made up from complexes of metals having a valency of three or greater and of halides of rare earth ions having a valency of three or greater. The rare-earth ions include an optically active rare-earth ion.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: January 12, 1999
    Assignee: France Telecom
    Inventors: Fran.cedilla.ois Auzel, Petrus Santa Cruz