Patents by Inventor Mahendra D. Sandesara

Mahendra D. Sandesara 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 disposal of arsenic salts
    Patent number: 4118243
    Abstract: Arsenic-containing waste materials comprising water-soluble arsenic salts are processed to a product which comprises water-insoluble arsenic salts by reacting the same in an aqueous system with sulfuric acid and calcium hydroxide in the presence of sulfate ions and ferrous and/or ferric ions, and thereafter curing the system to solid form.The process can be practiced with conventional waste materials without preliminary special processing, and provides a product which can be easily handled and is amenable to secure landfill disposal.
    Type: Grant
    Filed: September 2, 1977
    Date of Patent: October 3, 1978
    Assignee: Waste Management of Illinois, Inc.
    Inventor: Mahendra D. Sandesara