Patents by Inventor Leonard B. Sand

Leonard B. Sand 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).

  • Synthetic zeolite
    Patent number: 4093699
    Abstract: Method for making a zeolite having the structure of offretite, consisting of reacting in a closed container under autogenous pressure in the absence of tetramethylammonium ions, a composition having specific mole rations of K.sub.2 O,Na.sub.2 O,SiO.sub.2, Al.sub.2 O.sub.3, and H.sub.2 O.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: June 6, 1978
    Assignee: Zeochem Corporation
    Inventor: Leonard B. Sand
  • Process for producing fluidized mordenite particles
    Patent number: 4081514
    Abstract: Process for forming a zeolite particle in the fluidizable size range from 20 to 150 micrometers. Acid-stable, molecular sieve zeolite mordenite is formed by mixing silica-alumina gel particles in the fluidized size range with sodium silicate, sodium hydroxide, sodium chloride, and mordenite seed crystals. For example, the mixture is reacted under autogenous pressure at 180.degree. C for 24 hours.
    Type: Grant
    Filed: February 10, 1976
    Date of Patent: March 28, 1978
    Assignee: Zeochem Corporation
    Inventors: Leonard B. Sand, Glenn W. Dodwell
  • Preparation of synthetic ferrierite
    Patent number: 4017590
    Abstract: Synthetic Na,K-ferrierite, a molecular sieve zeolite capable of intracrystalline adsorption of molecules, is prepared by hydrothermal synthesis in the water, soda, potash, alumina, silica system. Crystallization is best achieved in the temperature range of 230.degree.-310.degree. C and autoclaving times of 2-96 hours with the use of co-precipitated silica-alumina gels and Na and K carbonates and bicarbonates.
    Type: Grant
    Filed: April 15, 1976
    Date of Patent: April 12, 1977
    Assignee: Zeochem Corporation
    Inventors: William E. Cormier, Leonard B. Sand
  • Test method for determining zeolite
    Patent number: 3982896
    Abstract: A test method for determining the amount of zeolite material in a sample comprising heating a weighed portion of the sample to remove adsorbed water, cooling the heated portion, adding a known quantity of water to the portion, noting the resulting temperature rise and correlating the temperature rise to the amount of zeolite material in the sample. The test can be carried out in the field with a kit which includes a weighing device.
    Type: Grant
    Filed: November 4, 1974
    Date of Patent: September 28, 1976
    Assignee: Zeochem Corporation
    Inventors: Charles A. Keisling, Leonard B. Sand