Patents by Inventor C. Ramadeva Shastry

C. Ramadeva Shastry 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).

  • Patent number: 6902829
    Abstract: A high strength dual phase cold rolled steel having controlled amounts of carbon, manganese, and molybdenum is used as a starting material in a hot-dip zinc coating process to manufacture a high strength dual phase cold rolled steel having a conventional galvanized or galvannealed coating applied to at least one surface thereof, the zinc coated steel product having a uniform coating of zinc in spite of the high manganese content of the steel.
    Type: Grant
    Filed: July 25, 2003
    Date of Patent: June 7, 2005
    Assignee: ISG Technologies Inc.
    Inventors: Rajendra Pradhan, C. Ramadeva Shastry
  • Publication number: 20040033386
    Abstract: A high strength dual phase cold rolled steel having controlled amounts of carbon, manganese, and molybdenum is used as a starting material in a hot-dip zinc coating process to manufacture a high strength dual phase cold rolled steel having a conventional galvanized or galvannealed coating applied to at least one surface thereof, the zinc coated steel product having a uniform coating of zinc in spite of the high manganese content of the steel.
    Type: Application
    Filed: July 25, 2003
    Publication date: February 19, 2004
    Applicant: ISG Technologies Inc.
    Inventors: Rajendra Pradhan, C. Ramadeva Shastry
  • Patent number: 6635313
    Abstract: A method of coating dual phase high strength cold rolled steel having controlled amounts of carbon, manganese, and molybdenum is used as a starting material in a galvanizing/galvannealing process. Conditions in a multi-zone furnace of the galvanizing line can be controlled in a conventional manner while still effectively coating the high strength steel. A dual phase high strength steel product is made having a uniform coating of zinc in spite of the high manganese content of the steel.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: October 21, 2003
    Assignee: ISG Technologies, Inc.
    Inventors: Rajendra Pradhan, C. Ramadeva Shastry
  • Publication number: 20030091857
    Abstract: A dual phase high strength cold rolled steel having controlled amounts of carbon, manganese, and molybdenum is used as a starting material in a galvanizing/galvannealing process. Conditions in a multi-zone furnace of the galvanizing line can be controlled in a conventional manner while still effectively coating the high strength steel. A dual phase high strength steel product is made having a uniform coating of zinc in spite of the high manganese content of the steel.
    Type: Application
    Filed: November 15, 2001
    Publication date: May 15, 2003
    Applicant: Bethlehem Steel Corporation
    Inventors: Rajendra Pradhan, C. Ramadeva Shastry
  • Patent number: 5714049
    Abstract: A post plating or post coating method for improving formability and weldability properties in sheet steel product having a protective zinc or zinc alloy layer formed on at least one surface thereof. The steps of the method comprise immersing the sheet steel product into a bath containing at least zinc to apply the protective layer, removing the sheet steel product from the bath, the sheet steel product having a protective zinc or zinc alloy layer formed on at least one surface thereof, and applying an alkaline solution to the protective layer to form a zinc oxide layer thereon, the alkaline solution being applied at a location outside the bath.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: February 3, 1998
    Assignee: Bethlehem Steel Corporation
    Inventors: C. Ramadeva Shastry, Stavros G. Fountoulakis, Elmer J. Wendell
  • Patent number: 5660707
    Abstract: A post plating or post coating method for improving formability and weldability properties in sheet steel product having a protective zinc or zinc alloy layer formed on at least one surface thereof. The steps of the method comprise immersing the sheet steel product into a bath containing at least zinc to apply the protective layer, removing the sheet steel product from the bath, the sheet steel product having a protective zinc or zinc alloy layer formed on at least one surface thereof, and applying an alkaline solution to the protective layer to form a zinc oxide layer thereon, the alkaline solution being applied at a location outside the bath.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: August 26, 1997
    Assignee: Bethlehem Steel Corporation
    Inventors: C. Ramadeva Shastry, Stavros G. Fountoulakis, Elmer J. Wendell