Patents Assigned to Ensci Incorporated
  • Metal value recovery from carbonaceous ores
    Patent number: 4801329
    Abstract: A process for recovering a first metal, e.g., gold, from a carbonaceous ore comprising contacting the ore with an added metal component other than an alkali metal or alkaline earth metal component in an amount effective to at least promote the oxidation of carbonaceous material in the ore, the contacting occurring at conditions effective to (1) chemically oxidize at least a portion of the carbonaceous material, and (2) at least partially liberate the first metal from the ore; and recovering the first metal from the ore.
    Type: Grant
    Filed: March 12, 1987
    Date of Patent: January 31, 1989
    Assignee: Ensci Incorporated
    Inventors: Thomas J. Clough, John W. Sibert, Arthur C. Riese
  • Alumina and alkaline earth metal oxide modified zeolite glass composition
    Patent number: 4680277
    Abstract: The invention relates to glasses formed from naturally occurring zeolites which are modified by inclusion of additional alumina.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: July 14, 1987
    Assignee: Ensci Incorporated
    Inventor: Tetsuro Horiuchi
  • Alkaline-resistant glass bodies and fibers
    Patent number: 4652535
    Abstract: The invention relates to glasses formed from modified naturally occurring zeolites and in particular to alkaline-resistant glasses containing a high calcia loading.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: March 24, 1987
    Assignee: Ensci Incorporated
    Inventors: John D. Mackenzie, Tetsuro Horiuchi