Patents by Inventor Nissim Rachima

Nissim Rachima 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).

  • Process for reducing calcium ion concentrations in alkaline alkali metal chloride brines
    Patent number: 4277447
    Abstract: A process for reducing calcium ion concentration in alkaline alkali metal chloride brines containing an alkali metal hydroxide is disclosed. The process comprises admixing an alkali metal bicarbonate with the alkaline brines to form an insoluble calcium salt, removing the insoluble calcium salt from the brine, and recovering a purified alkali metal chloride brine having reduced calcium ion concentration.The process produces alkali metal chloride brines suitable for use in electrolytic diaphragm cells while substantially reducing the amount of acid required to neutralize the brines.
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: July 7, 1981
    Assignee: Olin Corporation
    Inventors: Richard F. Chambers, Nissim Rachima
  • Process for disposal of sulfate containing brines from diaphragm cell caustic evaporator systems
    Patent number: 4223949
    Abstract: Disposal of effluent solutions containing sodium sulfate in an ecologically safe and economically sound manner is accomplished in a process which admixes the effluent with the aqueous solution used as the mining solution in salt deposits. The effluent-containing mining solution is injected into the brine well to dissolve sodium chloride while inhibiting the dissolution of soluble calcium compounds. Brine recovered from the wells has a reduced concentration of dissolved calcium.
    Type: Grant
    Filed: January 4, 1979
    Date of Patent: September 23, 1980
    Assignee: Olin Corporation
    Inventors: Jaswant S. Gill, Joseph L. Wood, Nissim Rachima