Patents by Inventor Raghunath Padiyath

Raghunath Padiyath 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).

  • Publication number: 20080075947
    Abstract: A multilayer film article is disclosed. The multilayer film article includes an infrared light reflecting multilayer film having alternating layers of a first polymer type and a second polymer type, a hardcoat layer that is the reaction product of a mixture that includes a curable, crosslinkable fluoro-acrylate-containing compound; a curable, crosslinkable non-fluorinated organic compound; infrared light absorbing nanoparticles; and a polymerization initiator. The hardcoat layer being disposed adjacent the multilayer film.
    Type: Application
    Filed: September 27, 2006
    Publication date: March 27, 2008
    Inventors: Raghunath Padiyath, Zai-Ming Qiu, James E. Thorson, Jung-Sheng Wu
  • Publication number: 20080050579
    Abstract: A solar control glazing laminate may include a solar control film disposed between first and second polyvinyl butyral layers and first and second glazing substrates. The solar control film may include an infrared radiation reflecting polymeric film and a polymeric binder layer disposed on the infrared radiation reflecting polymeric film. The polymeric binder layer may include a polyester and cross-linked multi-functional acrylate segments and may have infrared radiation absorbing nanoparticles dispersed therein.
    Type: Application
    Filed: August 22, 2006
    Publication date: February 28, 2008
    Inventors: Janet R. Kirkman, Peter M. Olofson, Jie Yang, Stephen A. Johnson, Raghunath Padiyath
  • Publication number: 20070281170
    Abstract: An insulated glazing unit is described and includes a first transparent substrate spaced apart from a parallel second transparent substrate, a sealed void space defined between the first transparent substrate, second transparent substrate, and the window mounting member, and an infrared radiation reflecting multilayer polymeric film disposed between the first transparent substrate and the second transparent substrate. The infrared radiation reflecting multilayer polymeric film includes a plurality of alternating polymeric layers of a first polymer material and a second polymer material. At least one of the alternating polymer layers is birefringent and oriented. The alternating polymeric layers cooperate to reflect infrared radiation.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 6, 2007
    Inventors: Jayshree Seth, Raghunath Padiyath
  • Patent number: 7271534
    Abstract: The invention relates to organic electronic devices and methods of manufacture comprising at least two segments, each segment comprising an organic electronic light-emitting device wherein each segment is defined by peripheral edges; wherein each segment comprises a first electrical contact disposed on a first peripheral edge and a second electrical contact disposed on a different peripheral edge than the first electrical contact and the electrical contacts of each segment are joined in electrical communication with a conductive material.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: September 18, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Raghunath Padiyath, Jon E. Ottman, David A. Engler
  • Publication number: 20070109673
    Abstract: An infrared light reflecting article is disclosed and includes a visible light transparent substrate including a polymer and an infrared light reflecting cholesteric liquid crystal layer disposed on the substrate. The substrate and infrared light reflecting cholesteric liquid crystal layer have a combined haze value of less than 3%.
    Type: Application
    Filed: October 25, 2005
    Publication date: May 17, 2007
    Inventors: Raghunath Padiyath, Marc Radcliffe, Cristina Thomas, Charles Marttila, Manish Jain, Michael Weber, Feng Bai
  • Publication number: 20070020451
    Abstract: A barrier assembly having a flexible or rigid substrate overcoated with an all polymer multilayer stack. A multilayer on the substrate includes alternating diamond-like glass or carbon layers with polymer layers. Another multilayer includes alternating polymer layers using different types of polymers.
    Type: Application
    Filed: July 20, 2005
    Publication date: January 25, 2007
    Inventors: Raghunath Padiyath, Moses David
  • Patent number: 7156942
    Abstract: Organic electroluminescent devices and methods of preparing such devices are provided. The organic electroluminescent devices include a first electrode, a light emitting structure, a second electrode, a conductive layer, and a non-conductive material. The light emitting structure is disposed between the first and second electrodes. The conductive layer is disposed on at least a portion of the second electrode and is in electrical communication with the second electrode through an opening in the non-conductive material.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: January 2, 2007
    Assignee: 3M Innovative Properties Company
    Inventors: Fred B. McCormick, Jon E. Ottman, Raghunath Padiyath
  • Publication number: 20060154049
    Abstract: A multilayer film article is disclosed. The multilayer film article includes an infrared light reflecting multilayer film having alternating layers of a first polymer type and a second polymer type, an infrared light absorbing nanoparticle layer including a plurality of metal oxide nanoparticles dispersed in a cured polymeric binder and having a thickness in a range from 1 to 20 micrometers. The nanoparticle layer being disposed adjacent the multilayer film. The metal oxide nanoparticles include tin oxide or doped tin oxide.
    Type: Application
    Filed: December 21, 2005
    Publication date: July 13, 2006
    Inventors: Raghunath Padiyath, Charles Marttila, Cristina Thomas, Michael Weber
  • Patent number: 7018713
    Abstract: A flexible barrier assembly having a flexible visible light-transmissive substrate having a Tg greater than or equal to that of heat-stabilized polyethylene terephthalate (“HSPET”) overcoated with a first polymer layer having a Tg greater than or equal to that of HSPET and further overcoated with at least two visible light-transmissive inorganic barrier layers separated by at least one second polymer layer having a Tg greater than or equal to that of HSPET can be used to mount, cover, encapsulate or form moisture- and oxygen-sensitive articles such as organic light emitting devices and light valves.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: March 28, 2006
    Assignee: 3M Innovative Properties Company
    Inventors: Raghunath Padiyath, Mark A. Roehrig
  • Publication number: 20060062937
    Abstract: A flexible barrier assembly having a flexible visible light-transmissive substrate having a Tg greater than or equal to that of heat-stabilized polyethylene terephthalate (“HSPET”) overcoated with a first polymer layer having a Tg greater than or equal to that of HSPET and further overcoated with at least two visible light-transmissive inorganic barrier layers separated by at least one second polymer layer having a Tg greater than or equal to that of HSPET can be used to mount, cover, encapsulate or form moisture- and oxygen-sensitive articles such as organic light emitting devices and light valves.
    Type: Application
    Filed: November 14, 2005
    Publication date: March 23, 2006
    Inventors: Raghunath Padiyath, Mark Roehrig
  • Publication number: 20060057367
    Abstract: An optical film includes an optical substrate and an adhesive first surface disposed on the optical substrate. The adhesive includes siloxane moieties at a siloxane-rich second surface of the adhesive. The adhesive increases adhesion when placed in contact with a second substrate over time. Optical film methods are also disclosed.
    Type: Application
    Filed: September 14, 2004
    Publication date: March 16, 2006
    Inventors: Audrey Sherman, Mieczyslaw Mazurek, Wendi Winkler, Cristina Thomas, Kenneth Callahan, David Erismann, Raghunath Padiyath, Lyudmila Pekurovsky
  • Patent number: 6975067
    Abstract: Organic electroluminescent devices and methods of preparing such devices are provided. The organic electroluminescent devices include a first electrode, a light emitting structure, a second electrode, a conductive layer, and a non-conductive material. The light emitting structure is disposed between the first and second electrodes. The conductive layer is disposed on at least a portion of the second electrode and is in electrical communication with the second electrode through an opening in the non-conductive material.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: December 13, 2005
    Assignee: 3M Innovative Properties Company
    Inventors: Fred B. McCormick, Jon E. Ottman, Raghunath Padiyath
  • Publication number: 20050247400
    Abstract: Organic electroluminescent devices and methods of preparing such devices are provided. The organic electroluminescent devices include a first electrode, a light emitting structure, a second electrode, a conductive layer, and a non-conductive material. The light emitting structure is disposed between the first and second electrodes. The conductive layer is disposed on at least a portion of the second electrode and is in electrical communication with the second electrode through an opening in the non-conductive material.
    Type: Application
    Filed: July 12, 2005
    Publication date: November 10, 2005
    Inventors: Fred B. McCormick, Jon E. Ottman, Raghunath Padiyath
  • Publication number: 20050095736
    Abstract: The invention relates to a method of making an organic electronic device and articles.
    Type: Application
    Filed: November 4, 2003
    Publication date: May 5, 2005
    Inventors: Raghunath Padiyath, Jon Ottman, David Engler
  • Publication number: 20050094394
    Abstract: The invention relates to organic electronic devices and methods of manufacture.
    Type: Application
    Filed: November 4, 2003
    Publication date: May 5, 2005
    Inventors: Raghunath Padiyath, Jon Ottman, David Engler
  • Publication number: 20050008782
    Abstract: The invention is a method of forming extrudate having substantially uniform thickness. A shim is formed which has a thickness variation of less than or equal to about 0.5 mil (13 microns) total indicated runout. This shim is disposed between a first die portion having a first surface and a second die portion having a second surface. A slot is formed between the first surface and the second surface. The slot has a height dimension substantially the same as the shim thickness. Flowable material is extruded through the slot.
    Type: Application
    Filed: August 3, 2004
    Publication date: January 13, 2005
    Inventors: James Nelson, Raghunath Padiyath, Robert Secor, Mark Stevenson, Michael Tichy, Robert Yapel
  • Patent number: 6813820
    Abstract: The invention is a method of forming extrudate having substantially uniform thickness. A shim is formed which has a thickness variation of less than or equal to about 0.5 mil (13 microns) total indicated runout. This shim is disposed between a first die portion having a first surface and a second die portion having a second surface. A slot is formed between the first surface and the second surface. The slot has a height dimension substantially the same as the shim thickness. Flowable material is extruded through the slot.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: November 9, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: James M. Nelson, Raghunath Padiyath, Robert B. Secor, Mark J. Stevenson, Michael J. Tichy, Robert A. Yapel
  • Publication number: 20040195967
    Abstract: A flexible barrier assembly having a flexible visible light-transmissive substrate having a Tg greater than or equal to that of heat-stabilized polyethylene terephthalate (“HSPET”) overcoated with a first polymer layer having a Tg greater than or equal to that of HSPET and further overcoated with at least two visible light-transmissive inorganic barrier layers separated by at least one second polymer layer having a Tg greater than or equal to that of HSPET can be used to mount, cover, encapsulate or form moisture- and oxygen-sensitive articles such as organic light emitting devices and light valves.
    Type: Application
    Filed: April 2, 2003
    Publication date: October 7, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Raghunath Padiyath, Mark A. Roehrig
  • Patent number: 6783915
    Abstract: A black matrix can be formed by thermal transfer on a receptor substrate for use, for example, in a display application. This black matrix can be used, for example, as a color filter black matrix or a TFT (thin film transistor) black matrix to provide contrast and/or to separate adjacent electrically-conducting components.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: August 31, 2004
    Assignee: 3M Innovative Properties Company
    Inventors: Richard J. Pokorny, Raghunath Padiyath, Kazuki Noda
  • Publication number: 20040119403
    Abstract: Organic electroluminescent devices and methods of preparing such devices are provided. The organic electroluminescent devices include a first electrode, a light emitting structure, a second electrode, a conductive layer, and a non-conductive material. The light emitting structure is disposed between the first and second electrodes. The conductive layer is disposed on at least a portion of the second electrode and is in electrical communication with the second electrode through an opening in the non-conductive material.
    Type: Application
    Filed: December 19, 2002
    Publication date: June 24, 2004
    Applicant: 3M Innovative Properties Company
    Inventors: Fred B. McCormick, Jon E. Ottman, Raghunath Padiyath