Patents Examined by Hiram N. Bernstein
  • Crystal growing system
    Patent number: 4603034
    Abstract: System for formation of a mineral crystal having a regular cross-sectional shape, including a crucible, a mass of crystal nutrient melt in the crucible, and a cooling element which defines a growing zone on the surface of the nutrient melt.
    Type: Grant
    Filed: April 12, 1982
    Date of Patent: July 29, 1986
    Inventor: Earle R. Vickery, III
  • Distillative purification of alkane sulfonic acids
    Patent number: 4035242
    Abstract: Aqueous solutions of methane sulfonic acid are dehydrated and purified in a two-step fractionation process.
    Type: Grant
    Filed: September 29, 1975
    Date of Patent: July 12, 1977
    Assignee: PPG Industries, Inc.
    Inventor: Donald R. Brandt