Patents by Inventor Dana L. Coller

Dana L. Coller 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).

  • Patent number: 4670243
    Abstract: A titanium acylate solution is produced by adding glacial acetic acid to tetra-isopropyl titanate. Distilled water is then added until the solution clears, and a high grade alkaline-earth metal carbonate, such as BaCO.sub.3, SrCO.sub.3 or CaCO.sub.3, or a combination thereof, is added and agitated until the earth-metal dissolves and the solution again becomes clear. An alkaline hydroxide, such as NaOH, is added until the pH of the solution reaches 13 or 10 above, and causes crystals of an earth-metal titanate to form in the solution. The solution is thereafter filtered to produce an alkaline-earth metal titanate filter cake which is then dried and washed to produce the desired powder. At no time during the process is it necessary to apply any external heat to the solution. The heat of reaction is sufficient.
    Type: Grant
    Filed: June 30, 1986
    Date of Patent: June 2, 1987
    Assignee: Ferro Corporation
    Inventors: James M. Wilson, Dana L. Coller, Subramaniam Venkataramani
  • Patent number: 4506026
    Abstract: A low fired, temperature compensating dielectric composition is disclosed. The invention dielectric is formed of a base ceramic and a frit material. The base ceramic includes magnesium oxide, titanium oxide, calcium oxide, alumina, silica and at least one oxide of a rare element from the group of niobium, neodymium, tantalum, lanthanum, yttrium and praseodymium. The preferred oxides are those of niobium alone or with neodymium.
    Type: Grant
    Filed: December 23, 1983
    Date of Patent: March 19, 1985
    Assignee: TAM Ceramics, Inc.
    Inventors: Charles E. Hodgkins, Daniel C. Rose, Dana L. Coller