Patents by Inventor Terence C. Dean

Terence C. Dean 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).

  • Moisture resistant sodium titanate and potassium titanate
    Patent number: 5147579
    Abstract: The present invention provides free flowing and moisture resistant compositions from normally hygroscopic compositions by a process of mixing the hygroscopic material with a sealing material and heat treating. By controlling the sealing material added, the heat treatment time, and the heat treatment temperature, the sealing material forms a glassy coating on the hygroscopic material that is impervious to moisture while retaining free-flow properties. The present invention particularly provides free-flowing and moisture resistant sodium titanate and potassium titanate compositions having a moisture pick-up =< about 0.5 wt. % by a process of mixing sodium titanate or potassium titanate with a sealing material and heat treating the mixture.
    Type: Grant
    Filed: July 17, 1989
    Date of Patent: September 15, 1992
    Assignee: Tam Ceramics, Inc.
    Inventor: Terence C. Dean
  • Dielectric ceramic with high K, low DF and flat TC
    Patent number: 5029042
    Abstract: The present invention provides ceramic compositions for preparing multi-layer capacitors, having high dielectric constants between about 4900 and 5400, dissipation factors below about 2.0%, high insulation resistance capacitance products and stable temperature coefficient characteristics, by a process of mixing a major ceramic component with one or more precipitated dopant components. By controlling the conditions of the system, precipitated dopant particles are charged oppositely to major ceramic component particles and are thus associated with the major ceramic component particles.
    Type: Grant
    Filed: July 20, 1989
    Date of Patent: July 2, 1991
    Assignee: Tam Ceramics, Inc.
    Inventor: Terence C. Dean
  • Dielectric ceramic composition with high dielectric constant and flat TC characteristics
    Patent number: 4882305
    Abstract: The present invention provides ceramic compositions for preparing multi-layer capacitors (MLCs) having high dielectric constants between about 3000 and 4700 and stable temperature coefficients (TC) prepared from high purity barium titanate, niobium pentoxide and cobalt oxide.
    Type: Grant
    Filed: October 9, 1987
    Date of Patent: November 21, 1989
    Assignee: TAM Ceramics, Inc.
    Inventors: Mike S. H. Chu, Charles E. Hodgkins, Terence C. Dean