Patents by Inventor Basil E. Walker, Jr.

Basil E. Walker, Jr. 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: 4626369
    Abstract: Lead zirconate titanate ceramics comprise from about 92 to 99.0 weight pent of lead zirconate and lead titanate in ratio from 0.505 to 0.54:0.495 to 0.46 respectively, from about 0.5 to about 2 weight percent of one or more fluorides or chlorides of an alkali metal or alkaline earth except francium or radium, and 0.5 to 6 weight percent of one or more oxides of magnesium, barium, chromium, scandium, aluminum, lanthanium, praesodymium, neodymium or samarium. The ceramic after pressing is annealed at a temperature from about 1050.degree. to 1350.degree. C. Ceramic elements made from the above ceramics are useful as sonar and microphone transducers.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: December 2, 1986
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Basil E. Walker, Jr.