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: 20170248743
    Abstract: The present disclosure relates generally to light management constructions comprising microstructured prismatic elements useful in the preparation of sun-facing light redirecting films having reduced glare.
    Type: Application
    Filed: October 13, 2015
    Publication date: August 31, 2017
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: BING HAO, MANOJ NIRMAL, CHARLES A. MARTTILA, OWEN M. ANDERSON, SCOTT M. TAPIO, ERIK A. AHO, RAGHUNATH PADIYATH, JONATHAN F. MANSHEIM, JOHN F. REED
  • Publication number: 20170248741
    Abstract: The present disclosure relates generally to light management constructions comprising microstructured prismatic elements useful in the preparation of room-facing light redirecting films having reduced glare.
    Type: Application
    Filed: October 16, 2015
    Publication date: August 31, 2017
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: BING HAO, MANOJ NIRMAL, CHARLES A. MARTTILA, RAGHUNATH PADIYATH, JONATHAN F. MANSHEIM, ERIK A. AHO, SCOTT M. TAPIO, OWEN M. ANDERSON, EILEEN M. F. HAUS, JOHN F. REED
  • Patent number: 9739436
    Abstract: Light management film constructions contain a first optical film having a first major surface and a second major surface opposite the first major surface. The first major surface is a microstructured surface with asymmetrical structures. The asymmetrical structures form an ordered arrangement of a plurality of multi-sided refractive prisms, with the multi-sided refractive prisms having a cross section of 3 or greater sides. A second optical film contacts and is bonded to substantially all of the structures of the first major structured surface of the first optical film. The light management constructions can be incorporated into optical articles such as windows.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: August 22, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Raghunath Padiyath, Charles A. Marttila, Mark K. Nestegard
  • Patent number: 9676911
    Abstract: A dispersion that includes at least one organic solvent; nanoparticles, wherein the nanoparticles are infrared absorptive, conductive or a both infrared absorptive and conductive; and at least one polycaprolactone-polyamine copolymer, wherein the dispersion comprises agglomerates of the nanoparticles and a majority of the agglomerates have an average diameter that are not greater than 100 nanometers. Compositions, films, articles and light control articles that utilize such dispersions are also discussed.
    Type: Grant
    Filed: January 5, 2009
    Date of Patent: June 13, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Jung-Sheng Wu, Raghunath Padiyath
  • Publication number: 20170114972
    Abstract: Solar light redirecting glazing units include light redirecting and light diffusing constructions. The solar light redirecting glazing units may include a glazing substrate, a visible light diffusing layer, and a light redirecting layer oriented such that incoming solar light contacts the visible light diffusing layer before contacting the light redirecting layer. The solar light redirecting glazing units may include a glazing substrate, a patterned visible light diffusing layer, and a light redirecting layer. The solar light redirecting glazing units may include two glazing substrates separated by an intervening space with a solar light redirecting layer disposed on one glazing substrate, and a visible light diffusing layer disposed on the other glazing substrate.
    Type: Application
    Filed: January 9, 2017
    Publication date: April 27, 2017
    Inventors: Raghunath Padiyath, Bing Hao, Charles A. Marttila
  • Publication number: 20170051164
    Abstract: Article comprising a substrate having a first major surface, wherein the major surface has an emissivity not greater than 0.2 and an exposed hardcoat on the first major surface, the hardcoat comprising binder, wherein the hardcoat has a thickness less than 200 nanometers and has a scratch rating of not greater than 1 as determined by the Linear Abrasion Test in the Examples. Articles described herein are useful, for example, for sun control window films having insulative properties.
    Type: Application
    Filed: April 27, 2015
    Publication date: February 23, 2017
    Inventors: Raghunath Padiyath, Naota Sugiyama, Richard J. Pokorny, Ta-Hua Yu, Gregory F. King, Stephen P. Maki, Robert R. Owings
  • Patent number: 9574730
    Abstract: Solar light redirecting glazing units include light redirecting and light diffusing constructions. The solar light redirecting glazing units may include a glazing substrate, a visible light diffusing layer, and a light redirecting layer oriented such that incoming solar light contacts the visible light diffusing layer before contacting the light redirecting layer. The solar light redirecting glazing units may include a glazing substrate, a patterned visible light diffusing layer, and a light redirecting layer. The solar light redirecting glazing units may include two glazing substrates separated by an intervening space with a solar light redirecting layer disposed on one glazing substrate, and a visible light diffusing layer disposed on the other glazing substrate.
    Type: Grant
    Filed: February 25, 2015
    Date of Patent: February 21, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Raghunath Padiyath, Bing Hao, Charles A. Marttila
  • Publication number: 20160369962
    Abstract: A light redirecting solar control film includes a multilayer film that transmits visible light and reflects infrared light, and a light redirecting layer adjacent to the multilayer film forming a light redirecting solar control film. The light redirecting layer includes a major surface forming a plurality of prism structures.
    Type: Application
    Filed: September 1, 2016
    Publication date: December 22, 2016
    Inventors: Raghunath Padiyath, Douglas A. Huntley, Olester Benson, JR.
  • Publication number: 20160306084
    Abstract: In certain embodiments, the present disclosure relates to low emissivity films and articles comprising them. Other embodiments are directed to methods of reducing emissivity in an article comprising the use of low emissivity films. In some embodiments, the low emissivity films comprise a metal layer and a layer comprising a metal, a metal oxide, or a metal nitride adjacent each of the two sides of the metal layer. This type of assembly may serve various purposes, including being used as a sun control film. These constructions may be used, for example, on glazing units for reducing transmission of infrared radiation across the film in both directions.
    Type: Application
    Filed: February 4, 2016
    Publication date: October 20, 2016
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: RAGHUNATH PADIYATH, GREGORY F. KING, ROBERT R. OWINGS, STEPHEN P. MAKI
  • Publication number: 20160102827
    Abstract: Light management film constructions contain a first optical film having a first major surface and a second major surface opposite the first major surface. The first major surface is a microstructured surface with asymmetrical structures. The asymmetrical structures form an ordered arrangement of a plurality of multi-sided refractive prisms, with the multi-sided refractive prisms having a cross section of 3 or greater sides. A second optical film contacts and is bonded to substantially all of the structures of the first major structured surface of the first optical film. The light management constructions can be incorporated into optical articles such as windows.
    Type: Application
    Filed: December 17, 2015
    Publication date: April 14, 2016
    Inventors: Raghunath Padiyath, Charles A. Marttila, Mark K. Nestegard
  • Publication number: 20160097502
    Abstract: The present disclosure is directed on some embodiments to light redirecting constructions comprising a first glazing substrate, a light redirecting film comprising at least one microstructure surface, a second glazing substrate, and a first interlayer bonding the first glazing substrate to both the light redirecting film and the second glazing substrate; wherein the light redirecting film has an area smaller than the area of the first interlayer.
    Type: Application
    Filed: May 30, 2014
    Publication date: April 7, 2016
    Inventors: RAGHUNATH PADIYATH, JONATHAN F. MANSHEIM, STEPHEN J. KUNCIO
  • Patent number: 9250368
    Abstract: Dual-sided daylight redirecting films include an optical substrate with two solar light redirecting layers disposed on the major surfaces of the optical substrate. The light redirecting layers are microstructured surfaces forming a plurality of prism structures. At least one of the microstructured surfaces is an ordered arrangement of a plurality of asymmetric refractive prisms, and the two solar light redirecting layers are not identical or mirror images. Articles may be prepared that include the dual-sided daylight redirecting film and one or more glazing substrates.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: February 2, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Raghunath Padiyath, Charles A. Marttila, Bing Hao
  • Patent number: 9244206
    Abstract: Light management film constructions contain a first optical film having a first major surface and a second major surface opposite the first major surface. The first major surface is a microstructured surface with asymmetrical structures. The asymmetrical structures form an ordered arrangement of a plurality of multi-sided refractive prisms, with the multi-sided refractive prisms having a cross section of 3 or greater sides. A second optical film contacts and is bonded to substantially all of the structures of the first major structured surface of the first optical film. The light management constructions can be incorporated into optical articles such as windows.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: January 26, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Raghunath Padiyath, Charles A. Marttila, Mark K. Nestegard
  • Publication number: 20150323718
    Abstract: A light diffusing solar control film includes a multilayer film that transmits visible light and reflects infrared light, and a light diffusing layer or surface adjacent to the multilayer film forming a light diffusing solar control film. The light diffusing solar control film has a haze value of 10% or greater.
    Type: Application
    Filed: April 14, 2015
    Publication date: November 12, 2015
    Inventors: Raghunath Padiyath, Douglas A. Huntley
  • Publication number: 20150184817
    Abstract: Solar light redirecting glazing units include light redirecting and light diffusing constructions. The solar light redirecting glazing units may include a glazing substrate, a visible light diffusing layer, and a light redirecting layer oriented such that incoming solar light contacts the visible light diffusing layer before contacting the light redirecting layer. The solar light redirecting glazing units may include a glazing substrate, a patterned visible light diffusing layer, and a light redirecting layer. The solar light redirecting glazing units may include two glazing substrates separated by an intervening space with a solar light redirecting layer disposed on one glazing substrate, and a visible light diffusing layer disposed on the other glazing substrate.
    Type: Application
    Filed: February 25, 2015
    Publication date: July 2, 2015
    Inventors: Raghunath Padiyath, Bing Hao, Charles A. Marttila
  • Patent number: 8995059
    Abstract: Solar light redirecting glazing units include light redirecting and light diffusing constructions. The solar light redirecting glazing units may include a glazing substrate, a visible light diffusing layer, and a light redirecting layer oriented such that incoming solar light contacts the visible light diffusing layer before contacting the light redirecting layer. The solar light redirecting glazing units may include a glazing substrate, a patterned visible light diffusing layer, and a light redirecting layer. The solar light redirecting glazing units may include two glazing substrates separated by an intervening space with a solar light redirecting layer disposed on one glazing substrate, and a visible light diffusing layer disposed on the other glazing substrate.
    Type: Grant
    Filed: March 12, 2012
    Date of Patent: March 31, 2015
    Assignee: 3M Innovative Properties Company
    Inventors: Raghunath Padiyath, Bing Hao, Charles A. Marttila
  • Publication number: 20150037567
    Abstract: A coating composition is disclosed. The coating composition includes a poly(methyl methacrylate) polymer or copolymer having a weight average molecular weight of at least 50,000 grams per mole; monomer comprising at least one of an alkylene diacrylate, alkylene dimethacrylate, cycloalkylene diacrylate, or cycloalkylenedimethacrylate, wherein the at least one of an alkylene diacrylate, alkylene dimethacrylate, cycloalkylene diacrylate, or cycloalkylenedimethacrylate provides at least 80 percent by weight of the monomer; and a stabilizer against ultraviolet light. An article including a coating on a surface of a substrate and a method of making the article are also disclosed. The coating on the surface of the substrate is obtained by curing the disclosed coating composition.
    Type: Application
    Filed: March 14, 2013
    Publication date: February 5, 2015
    Inventors: Susannah C. Clear, Raghunath Padiyath, Garry W. Lachmansingh, Mark A. Strobel, Sonja S. Mackey, Naiyong Jing
  • Publication number: 20140211331
    Abstract: Some solar light redirecting glazing constructions include a glazing substrate and two solar light redirecting layers present on the two major surfaces of the glazing substrate. Other solar light redirecting glazing constructions include two glazing substrates, each glazing substrate having a light redirecting layer present on one of the major surfaces of the glazing substrate. The light redirecting layers are microstructured surfaces forming a plurality of prism structures. At least one of the microstructured surfaces is an ordered arrangement of a plurality of asymmetric refractive prisms, and the two solar light redirecting layers are not identical or mirror images.
    Type: Application
    Filed: July 17, 2012
    Publication date: July 31, 2014
    Applicant: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Raghunath Padiyath, Charles A. Marttila, Bing Hao
  • Publication number: 20140198390
    Abstract: Dual-sided daylight redirecting films include an optical substrate with two solar light redirecting layers disposed on the major surfaces of the optical substrate. The light redirecting layers are microstructured surfaces forming a plurality of prism structures. At least one of the microstructured surfaces is an ordered arrangement of a plurality of asymmetric refractive prisms, and the two solar light redirecting layers are not identical or mirror images. Articles may be prepared that include the dual-sided daylight redirecting film and one or more glazing substrates.
    Type: Application
    Filed: July 17, 2012
    Publication date: July 17, 2014
    Inventors: Raghunath Padiyath, Charles A. Marttila, Bing Hao
  • Publication number: 20140104689
    Abstract: Solar light redirecting glazing units include light redirecting and light diffusing constructions. The solar light redirecting glazing units may include a glazing substrate, a visible light diffusing layer, and a light redirecting layer oriented such that incoming solar light contacts the visible light diffusing layer before contacting the light redirecting layer. The solar light redirecting glazing units may include a glazing substrate, a patterned visible light diffusing layer, and a light redirecting layer. The solar light redirecting glazing units may include two glazing substrates separated by an intervening space with a solar light redirecting layer disposed on one glazing substrate, and a visible light diffusing layer disposed on the other glazing substrate.
    Type: Application
    Filed: March 12, 2012
    Publication date: April 17, 2014
    Applicant: Hybrid Light Redirecting and Light Diffusing Constructions
    Inventors: Raghunath Padiyath, Bing Hao, Charles A. Marttila