Patents by Inventor Ileana Cojanu

Ileana Cojanu 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).

  • Filler for heat-conductive plastics materials
    Patent number: 5344635
    Abstract: A powder mixture of aluminium nitride in the form of sintered agglomerates with fractions of different particle size, which mixture comprises (1) 80 to 50% by weight of aluminium nitride in the form of sintered agglomerates having a mean particle diameter of 30 to 50 .mu.m, and (2) 20 to 50% by weight of aluminium nitride in the form of unsintered particles and having a mean particle diameter of 0.1 to 5 .mu.m. The mixture is suitable for use as filler for polymer materials, especially for casting resins, from which moulded parts of high thermal conductivity can be fabricated, for example potted electronic components.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: September 6, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Patrice Bujard, Ileana Cojanu