Patents by Inventor Anandkumar Ramakrishnan Kannurpatti

Anandkumar Ramakrishnan Kannurpatti 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 preparing a flexographic printing plate
    Patent number: 7348123
    Abstract: A flexographic printing plate is prepared from a photosensitive element having a photopolymerizable elastomeric layer with specific rheological properties. The element is imagewise exposed and thermally treated to form a relief structure suitable for flexographic printing.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: March 25, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Christoph Mengel, Dietmar Dudek, Mark A Hackler, Anandkumar Ramakrishnan Kannurpatti
  • Process for preparing a flexographic printing plate
    Patent number: 7122295
    Abstract: A flexographic printing plate is prepared from a photosensitive element having a photopolymerizable elastomeric layer with specific rheological properties. The element is imagewise exposed and thermally treated to form a relief structure suitable for flexographic printing.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: October 17, 2006
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Christoph Mengel, Dietmar Dudek, Mark A. Hackler, Anandkumar Ramakrishnan Kannurpatti
  • Method and apparatus for thermal processing a photosensitive element
    Patent number: 6797454
    Abstract: A method and apparatus for thermal processing a photosensitive element includes heating a composition layer on a flexible substrate to a melt temperature of an unirradiated area of the composition layer and maintaining the flexible substrate at a temperature below the melt temperature while pressing a heated absorbent layer against the heated composition layer, and repeating these steps for multiple cycles. A further embodiment of the method includes a step of cooling the flexible substrate and layer laminate on each cycle to maintain the flexible substrate at the desired temperature below that of the heated composition layer.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: September 28, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Melvin Harry Johnson, David Anthony Belfiore, Mark A. Hackler, Anandkumar Ramakrishnan Kannurpatti, Robert Lee Brown, Stephen Cushner, Robert Finley Drury
  • Laser engravable flexographic printing element and a method for forming a printing plate from the element
    Patent number: 6737216
    Abstract: Flexographic printing plate is made from a laser engravable flexographic printing element which includes on a support at least one laser engravable reinforced elastomeric layer of an elastomeric composition comprising an elastomeric binder, at least one monomer, a photoinitiator system that decreases in ultraviolet absorbance as polymerization proceeds and at least one additive which absorbs infrared radiation at 9 to 12 micrometers.
    Type: Grant
    Filed: November 26, 2001
    Date of Patent: May 18, 2004
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Anandkumar Ramakrishnan Kannurpatti, Howard Ensign Simmons, III
  • Process for preparing a flexographic printing plate
    Publication number: 20030211423
    Abstract: A flexographic printing plate is prepared from a photosensitive element having a photopolymerizable elastomeric layer with specific rheological properties. The element is imagewise exposed and thermally treated to form a relief structure suitable for flexographic printing.
    Type: Application
    Filed: October 18, 2002
    Publication date: November 13, 2003
    Inventors: Christoph Mengel, Dietmar Dudek, Mark A. Hackler, Anandkumar Ramakrishnan Kannurpatti
  • Laser engravable flexographic printing element and a method for forming a printing plate from the element
    Publication number: 20020123003
    Abstract: Flexographic printing plate is made from a laser engravable flexographic printing element which includes on a support at least one laser engravable reinforced elastomeric layer of an elastomeric composition comprising an elastomeric binder, at least one monomer, a photoinitiator system that decreases in ultraviolet absorbance as polymerization proceeds and at least one additive which absorbs infrared radiation at 9 to 12 micrometers.
    Type: Application
    Filed: November 26, 2001
    Publication date: September 5, 2002
    Inventors: Anandkumar Ramakrishnan Kannurpatti, Howard Ensign Simmons