Patents by Inventor Chandra C Ratnasamy

Chandra C Ratnasamy 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).

  • Desulfurization system and method for desulfurizing a fuel stream
    Patent number: 8323603
    Abstract: A method for producing a substantially desulfurized a hydrocarbon fuel stream at temperatures less than 100° C. The method includes providing a nondesulfurized fuel cell hydrocarbon fuel stream that may include water and passing the fuel stream sequentially through a zeolite Y adsorbent and a selective sulfur adsorbent. The zeolite Y adsorbent may be exchanged with copper ions. The method produces a substantially desulfurized hydrocarbon fuel stream containing less than 50 ppb sulfur.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: December 4, 2012
    Assignee: Sud-Chemie Inc.
    Inventors: Chandra C Ratnasamy, Jon P. Wagner, R. Steve Spivey, Hans-Georg Anfang
  • Desulfurization system and method for desulfurizing a fuel stream
    Publication number: 20090272675
    Abstract: A method for producing a substantially desulfurized a hydrocarbon fuel stream at temperatures less than 100° C. The method includes providing a nondesulfurized fuel cell hydrocarbon fuel stream that may include water and passing the fuel stream sequentially through a zeolite Y adsorbent and a selective sulfur adsorbent. The zeolite Y adsorbent may be exchanged with copper ions. The method produces a substantially desulfurized hydrocarbon fuel stream containing less than 50 ppb sulfur.
    Type: Application
    Filed: June 5, 2009
    Publication date: November 5, 2009
    Applicant: SUD-CHEMIE INC.
    Inventors: Chandra C Ratnasamy, Jon P. Wagner, R. Steve Spivey, Hans-Georg Anfang