Patents by Inventor Anandkumar R. Kannurpatti

Anandkumar R. 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).

  • Patent number: 8883393
    Abstract: The invention relates to an imaging element and a method of using the imaging element to form a recording element. The imaging element includes a composition sensitive to actinic radiation at a first wavelength and a photoluminescent tag that is responsive to radiation at a second wavelength different from the first wavelength. The photoluminescent tag can be used to authenticate the identity of the element, provide information about the element, and/or to establish one or more conditions in a device used to prepare the recording element from the imaging element.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: November 11, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Anandkumar R. Kannurpatti
  • Patent number: 8573120
    Abstract: This invention relates to a method and apparatus for thermally developing a photosensitive element. The thermal development method includes heating the photosensitive element to a temperature sufficient to cause a portion of a composition layer in the element to liquefy, soften, or melt; supporting a development medium with a non-rotating surface to provide contact of the development medium with the heated photosensitive element; and providing relative movement between the development medium and the non-rotating surface.
    Type: Grant
    Filed: May 20, 2013
    Date of Patent: November 5, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Mark A Hackler, Anandkumar R Kannurpatti, Robert A McMillen, Todd M Scheske
  • Publication number: 20130278909
    Abstract: This invention relates to a method and apparatus for thermally developing a photosensitive element. The thermal development method includes heating the photosensitive element to a temperature sufficient to cause a portion of a composition layer in the element to liquefy, soften, or melt; supporting a development medium with a non-rotating surface to provide contact of the development medium with the heated photosensitive element; and providing relative movement between the development medium and the non-rotating surface.
    Type: Application
    Filed: May 20, 2013
    Publication date: October 24, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: MARK A. HACKLER, ANANDKUMAR R. KANNURPATTI, ROBERT A. MCMILLEN, TODD M. SCHESKE
  • Patent number: 8468941
    Abstract: This invention relates to a method and apparatus for thermally developing a photosensitive element. The thermal development method includes heating the photosensitive element to a temperature sufficient to cause a portion of a composition layer in the element to liquefy, soften, or melt; supporting a development medium with a non-rotating surface to provide contact of the development medium with the heated photosensitive element; and providing relative movement between the development medium and the non-rotating surface.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: June 25, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Mark A. Hackler, Anandkumar R. Kannurpatti, Robert A. McMillen, Todd M. Scheske
  • Patent number: 8464637
    Abstract: The invention is a method and apparatus for forming a relief structure by thermally developing a photosensitive element containing a composition layer capable of being partially liquefied. During thermal development, the photosensitive element is supported on a base member having an exterior surface that is textured. The textures for the exterior surface include a particular surface roughness and/or patterns.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: June 18, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Mark A. Hackler, David Anthony Belfiore, Dietmar Dudek, Anandkumar R. Kannurpatti, Andreas Koch
  • Publication number: 20100242761
    Abstract: The invention is a method and apparatus for forming a relief structure by thermally developing a photosensitive element containing a composition layer capable of being partially liquefied. During thermal development, the photosensitive element is supported on a base member having an exterior surface that is textured. The textures for the exterior surface include a particular surface roughness and/or patterns.
    Type: Application
    Filed: May 24, 2010
    Publication date: September 30, 2010
    Applicant: E.I. DU PONT NEMOURS AND COMPANY
    Inventors: Mark A. Hackler, David Anthony Belfiore, Dietmar Dudek, Anandkumar R. Kannurpatti, Andreas Koch
  • Publication number: 20100086751
    Abstract: The invention relates to an imaging element and a method of using the imaging element to form a recording element. The imaging element includes a composition sensitive to actinic radiation at a first wavelength and a photoluminescent tag that is responsive to radiation at a second wavelength different from the first wavelength. The photoluminescent tag can be used to authenticate the identity of the element, provide information about the element, and/or to establish one or more conditions in a device used to prepare the recording element from the imaging element.
    Type: Application
    Filed: December 9, 2009
    Publication date: April 8, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventor: ANANDKUMAR R. KANNURPATTI
  • Publication number: 20100062230
    Abstract: This invention relates to a method and apparatus for thermally developing a photosensitive element. The thermal development method includes heating the photosensitive element to a temperature sufficient to cause a portion of a composition layer in the element to liquefy, soften, or melt; supporting a development medium with a non-rotating surface to provide contact of the development medium with the heated photosensitive element; and providing relative movement between the development medium and the non-rotating surface.
    Type: Application
    Filed: November 13, 2009
    Publication date: March 11, 2010
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: MARK A. HACKLER, ANANDKUMAR R. KANNURPATTI, ROBERT A. MCMILLEN, TODD M. SCHESKE
  • Patent number: 7611597
    Abstract: This invention pertains to a method and apparatus for thermally developing a photosensitive element, and particularly to a method and apparatus for supporting the photosensitive element with a removable flexible support member during thermal treatment.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: November 3, 2009
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Mark A Hackler, Dietmar Dudek, William W. Early, Anandkumar R. Kannurpatti, Jeffrey Robert Lake, Robert A. McMillen, David B. Neufeglise, Pier Luigi Sassanelli
  • Publication number: 20090098491
    Abstract: This invention pertains to a method and an apparatus for thermally developing a photosensitive element, and particularly to a method and apparatus for controlling vapor and condensate created during thermal treating of the photosensitive element.
    Type: Application
    Filed: December 16, 2008
    Publication date: April 16, 2009
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Mark A. Hackler, Anandkumar R. Kannurpatti, Robert A. McMillen, Wilford Shamlin, Arthur J. Taggi, Jeffrey Robert Lake, David B. Neufeglise, Siegfried R. Scheske
  • Patent number: 7503258
    Abstract: This invention relates to a method and apparatus for thermally developing a photosensitive element. The thermal development method includes heating the photosensitive element to a temperature sufficient to cause a portion of a composition layer in the element to liquefy, soften, or melt, contacting the heated photosensitive element with a development medium to absorb the liquefied portion at a contact location, and removing the development medium from the photosensitive element with a remover at a location away from the contact location.
    Type: Grant
    Filed: July 28, 2005
    Date of Patent: March 17, 2009
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Robert A. McMillen, Dietmar Dudek, Mark A. Hackler, Anandkumar R. Kannurpatti, John W. Trainor, Jr.
  • Publication number: 20080213706
    Abstract: This invention pertains to a method and apparatus for thermally developing a photosensitive element, and particularly to a method and apparatus for supporting the photosensitive element with a removable flexible support member during thermal treatment.
    Type: Application
    Filed: March 20, 2008
    Publication date: September 4, 2008
    Inventors: Mark A. Hackler, Dietmar Dudek, William W. Early, Anandkumar R. Kannurpatti, Jeffrey Robert Lake, Robert A. McMillen, David B. Neufeglise, Pier Luigi Sassanelli
  • Patent number: 7398812
    Abstract: This invention pertains to a method and apparatus for thermally developing a photosensitive element, and particularly to a method and apparatus for supporting the photosensitive element with a removable flexible support member during thermal treatment.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: July 15, 2008
    Assignee: E.I. du Pont de Nemours and Company
    Inventors: Mark A. Hackler, Dietmar Dudek, William W. Early, Anandkumar R. Kannurpatti, Jeffrey Robert Lake, Robert A. McMillen, David B. Neufeglise, Pier Luigi Sassanelli
  • Patent number: 6773859
    Abstract: The invention relates to a process for preparing a flexographic printing plate from a photosensitive element having a photopolymerizable layer and a thermally removable layer on the photopolymerizable layer. The process includes imagewise exposing the photosensitive element and thermally treating the exposed element to form a relief suitable for use in flexographic printing. The thermally removable layer can be transparent or opaque to actinic radiation. The invention also relates to a photosensitive element for use in this process. The photosensitive element includes a photopolymerizable layer and at least one thermally removable layer having a filler and a binder, wherein the binder is less than 49% by weight, based on the total weight of the binder and filler.
    Type: Grant
    Filed: February 27, 2002
    Date of Patent: August 10, 2004
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Roxy Ni Fan, Mark A. Hackler, Anandkumar R. Kannurpatti, Adrian Lungu, Bradley K. Taylor
  • Publication number: 20030180655
    Abstract: The invention relates to a process for preparing a flexographic printing plate from a photosensitive element having a photopolymerizable layer and a thermally removable layer on the photopolymerizable layer. The process includes imagewise exposing the photosensitive element and thermally treating the exposed element to form a relief suitable for use in flexographic printing. The thermally removable layer can be transparent or opaque to actinic radiation. The invention also relates to a photosensitive element for use in this process. The photosensitive element includes a photopolymerizable layer and at least one thermally removable layer having a filler and a binder, wherein the binder is less than 49% by weight, based on the total weight of the binder and filler.
    Type: Application
    Filed: February 27, 2002
    Publication date: September 25, 2003
    Inventors: Roxy Ni Fan, Mark A. Hackler, Anandkumar R. Kannurpatti, Adrian Lungu, Bradley K. Taylor
  • Patent number: 5730601
    Abstract: A composition for use in dental treatments of damaged or diseased teeth is provided. The composition comprises a combined filler material, photoinitiator and comonomer resin mixture polymerizable upon incidence of light. The comonomer resin mixture comprises a comonomer resin blend comprising at least two monomers from the same monomer series with at least a first monomer having a first molecular weight and a second monomer having a second molecular weight with the second molecular weight being greater than the first molecular weight of the first monomer. The comonomer resin mixture further comprises a third monomer combined with the comonomer resin blend.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: March 24, 1998
    Assignee: The Regents of the University of Colorado
    Inventors: Christopher N. Bowman, Kristi S. Anseth, Anandkumar R. Kannurpatti, Michael D. Goodner