Patents Examined by John P. Parrish
  • Composite inorganic structures and process of producing same
    Patent number: 4428895
    Abstract: Composite inorganic articles are produced by bringing two separate inorganic slurries, each containing different ceramic materials, into contact with each other, simultaneously freezing the slurries while in contact with each other to form a unified frozen structure, thawing and drying the structure, and firing the unified structure.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: January 31, 1984
    Assignee: Blasch Precision Ceramics, Inc.
    Inventors: Earl Blasch, Robert Smith-Johannsen