Patents by Inventor Karine L. Ovanesian

Karine L. Ovanesian 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).

  • Single-crystalline jewelry material based on aluminium garnets
    Patent number: 4543342
    Abstract: A single-crystalline jewelry material based on aluminium garnets of the general formula: Re.sub.3 Al.sub.5 O.sub.12, wherein Re=Y, Dy, Ho, Er, Tm, Lu and containing two dyeing additives. One of the additives is selected from the group consisting of europium in an amount of from 10.sup.-3 to 3% by weight or ytterbium in an amount of from 0.1 to 61.3% by weight and the other is selected from the group consisting of zirconium or silicon in an amount of from 10.sup.-4 to 1% by weight, or hafnium in an amount of from 10.sup.-3 to 3% by weight. The material has a color smoothly changing from green to violet.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: September 24, 1985
    Inventors: Ashot G. Petrosian, Armen S. Kuzanian, Karine L. Ovanesian, Tatyana I. Butaeva, Grigory O. Shirinian, Ashot A. Avetisian
  • Single-crystal material based on aluminium garnets
    Patent number: 4525460
    Abstract: A single-crystalline material based on aluminium garnets of the general formula Re.sub.3 Al.sub.5 O.sub.12, wherein Re=Y, Dy, Ho, Er, Lu and containing a dyeing additive of a red color spectrum, viz. specifically zirconium, in an amount ranging from 10.sup.-2 to 3% by weight.
    Type: Grant
    Filed: October 24, 1983
    Date of Patent: June 25, 1985
    Inventors: Ashot G. Petrosian, Khachik S. Bagdasarov, Armen S. Kuzanian, Karine L. Ovanesian, Tatyana I. Butaeva