Patents by Inventor Asim B. Ray

Asim B. Ray 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).

  • Electron beam coal desulfurization
    Patent number: 4406762
    Abstract: Converting both organic and inorganic sulfur compounds in coal to removable forms utilizing electron beam irradiation. The removable forms of sulfur include elemental suflur, gaseous compounds, and water-soluble compounds. Coal is pulverized and slurried and introduced into the electron beam reaction chamber where the conversion reactions take place. As a further benefit, coal dechlorination inherently results.
    Type: Grant
    Filed: January 19, 1982
    Date of Patent: September 27, 1983
    Assignee: Research-Cottrell, Inc.
    Inventors: Asim B. Ray, Paul L. Feldman
  • Regenerable process for SO.sub.2 removal employing gelatinous aluminum hydroxide as absorbent
    Patent number: 4256712
    Abstract: A regenerable process for removing SO.sub.2 from a gas comprising contacting the gas with an aqueous suspension of gelatinous aluminum hydroxide.
    Type: Grant
    Filed: June 6, 1978
    Date of Patent: March 17, 1981
    Assignee: Research-Cottrell, Inc.
    Inventors: Richard S. Atkins, Asim B. Ray
  • Process for desulfurization of coal
    Patent number: 4256464
    Abstract: Coal is oxidized by NO.sub.x in the presence of a liquid in which NO.sub.x is soluble. Oxidized sulfur species are removed by washing with water and dilute sulfuric acid. NO.sub.x is not consumed in the process and is recycled. More than 70% of sulfur in coal is removed.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: March 17, 1981
    Assignee: Research-Cottrell, Inc.
    Inventor: Asim B. Ray