Patents by Inventor Alexander Bimanand

Alexander Bimanand 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: 20160122573
    Abstract: A coated substrate includes: a substrate and a first layer on at least a portion of the substrate, the first layer including a polymer selected from the group consisting of an acrylic, an epoxy, a polyurethane, a copolymer thereof, and a mixture thereof, and an additive selected from the group consisting of an ultraviolet light (UV) absorber, a UV stabilizer, and a mixture thereof. The coated substrate further includes a second layer on at least a portion of the first layer, and a third layer on at least a portion of the second layer. A method of forming a coated substrate includes: forming a first layer on at least a portion of a substrate; forming a second layer on at least portion of the first layer; and forming a third layer by plasma enhanced chemical vapor deposition on at least a portion of the second layer.
    Type: Application
    Filed: October 28, 2015
    Publication date: May 5, 2016
    Inventors: Krishna K. Uprety, Alexander Bimanand, Khushroo H. Lakdawala, Harry Buhay
  • Patent number: 9326327
    Abstract: A multi-layer stack includes: a substrate; a drain layer on a first side of the substrate, the drain layer having a sheet resistance of less than about 106 ohms per square; a heater layer on the drain layer; and a dielectric layer between the heater layer and the drain layer is disclosed. A transparency for a flying vehicle including the multi-layer stack and having the drain layer configured to be grounded to the flying vehicle, and a flying vehicle including the transparency is also disclosed.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 26, 2016
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Krishna K. Uprety, Alexander Bimanand, Khushroo H. Lakdawala
  • Patent number: 9309589
    Abstract: A coated transparency including an electrically conductive multilayer stack is disclosed. The electrically conductive multilayer stack includes a first metal oxide layer including aluminum doped zinc (AZO), a metal layer including gold, and a second metal oxide layer including AZO. The electrically conductive multilayer stack has a low sheet resistance to provide radar attenuation and anti-static or static-dissipative properties, and has greater flexibility and resistance to corrosion than conventional multilayer stacks used to coat aircraft canopies and other substrates.
    Type: Grant
    Filed: June 21, 2011
    Date of Patent: April 12, 2016
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Krishna Uprety, Alexander Bimanand, Khushroo H. Lakdawala
  • Patent number: 9302452
    Abstract: A transparency including a conductive mesh is disclosed. The conductive mesh is formed by a plurality of inkjet printed electrically conductive lines on a polymer film or a glass, polyacrylate, polycarbonate, or polyurethane substrate, wherein at least one inkjet printed electrically conductive line intersects at least one other inkjet printed electrically conductive line. A flying vehicle including a transparency including a conductive mesh is also disclosed. Additionally, a method of preparing a transparency by laminating a polymer film and a substrate together, wherein a conductive mesh is formed on the polymer film by a plurality of inkjet printed electrically conductive lines, is also disclosed.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: April 5, 2016
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Krishna K. Uprety, Khushroo H. Lakdawala, Alexander Bimanand
  • Publication number: 20150264845
    Abstract: A coating including a carbon nanotube layer including carbon nanotubes; and a coating layer on the carbon nanotube layer is disclosed. The coating layer may include a polyurethane polymer, a polyacrylate polymer, a polysiloxane polymer, an epoxy polymer, or a combination thereof. A coated substrate including the coating is also disclosed.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 17, 2015
    Inventors: Alexander Bimanand, Krishna K. Uprety, Khushroo H. Lakdawala
  • Publication number: 20150232695
    Abstract: A coated substrate including a 1 to 3 mils thick coating layer has a Bayer abrasion resistance value of less than 1% Haze after 600 cycles. The coating layer includes a reaction product of a coating composition including a polyester diol, a di-isocyanate, and a fluorocarbon-based additive. A method of forming the coating layer on the substrate includes mixing reactants including a polyester diol, a di-isocyanate and a flurocarbon-based additive to form a polyurethane coating composition; depositing the polyurethane coating composition on the substrate; and curing the polyurethane coating composition to form an abrasion resistant coating on the substrate.
    Type: Application
    Filed: February 19, 2014
    Publication date: August 20, 2015
    Applicant: PPG INDUSTRIES OHIO, INC.
    Inventors: Ronald Li, Alexander Bimanand
  • Patent number: 8956730
    Abstract: An electrically conductive multilayer stack including a first metal oxide layer including titanium oxide, a metal layer on the first metal oxide layer, and a second metal oxide layer including titanium oxide on the metal layer, at least one of the first metal oxide layer and the second metal oxide layer including a first region, a second region on the first region, and a third region on the second region, the first region and the third region each having a higher oxygen concentration than that of the second region is disclosed. Methods of manufacturing an electrically conductive multilayer stack are also disclosed.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: February 17, 2015
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Krishna K. Uprety, Alexander Bimanand, Khushroo H. Lakdawala
  • Publication number: 20140093696
    Abstract: An electrically conductive multilayer stack including a first metal oxide layer including titanium oxide, a metal layer on the first metal oxide layer, and a second metal oxide layer including titanium oxide on the metal layer, at least one of the first metal oxide layer and the second metal oxide layer including a first region, a second region on the first region, and a third region on the second region, the first region and the third region each having a higher oxygen concentration than that of the second region is disclosed. Methods of manufacturing an electrically conductive multilayer stack are also disclosed.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: PPG INDUSTRIES OHIO, INC.
    Inventors: Krishna K. Uprety, Alexander Bimanand, Khushroo H. Lakdawala
  • Publication number: 20140093738
    Abstract: A coating composition including a hydrophobic first aliphatic polyisocyanate, a second aliphatic polyisocyanate including a hydrophilic portion, a polyester polyol, a hydrophilic polyol, and a fluorinated polyol compound is disclosed. A coated substrate including a topcoat including the composition is also disclosed. Methods of forming the topcoat on a substrate are also disclosed.
    Type: Application
    Filed: March 15, 2013
    Publication date: April 3, 2014
    Inventors: Alexander Bimanand, Krishna K. Uprety, Khushroo H. Lakdawala
  • Publication number: 20130228365
    Abstract: A transparency including a conductive mesh is disclosed. The conductive mesh is formed by a plurality of inkjet printed electrically conductive lines on a polymer film or a glass, polyacrylate, polycarbonate, or polyurethane substrate, wherein at least one inkjet printed electrically conductive line intersects at least one other inkjet printed electrically conductive line. A flying vehicle including a transparency including a conductive mesh is also disclosed. Additionally, a method of preparing a transparency by laminating a polymer film and a substrate together, wherein a conductive mesh is formed on the polymer film by a plurality of inkjet printed electrically conductive lines, is also disclosed.
    Type: Application
    Filed: March 2, 2012
    Publication date: September 5, 2013
    Inventors: Krishna K. Uprety, Khushroo H. Lakdawala, Alexander Bimanand
  • Publication number: 20120328859
    Abstract: A coated transparency including an electrically conductive multilayer stack is disclosed. The electrically conductive multilayer stack includes a first metal oxide layer including aluminum doped zinc (AZO), a metal layer including gold, and a second metal oxide layer including AZO. The electrically conductive multilayer stack has a low sheet resistance to provide radar attenuation and anti-static or static-dissipative properties, and has greater flexibility and resistance to corrosion than conventional multilayer stacks used to coat aircraft canopies and other substrates.
    Type: Application
    Filed: June 21, 2011
    Publication date: December 27, 2012
    Inventors: Krishna Uprety, Alexander Bimanand, Khushroo H. Lakdawala
  • Patent number: 8257830
    Abstract: A protective liner includes a base layer that can be affixed to an aircraft canopy or other substrate, a conductive polymeric interlayer positioned over the base layer, and a conductive top layer containing a reactive organic salt, or a hygroscopic salt, positioned over the conductive polymeric interlayer. The substrate can also be treated with a multilayer stack (including a substrate base coat layer, a metal layer positioned over the substrate base layer, a metal oxide layer positioned over the metal layer, and a tie layer positioned over the metal oxide layer). The protective liner can be affixed to a pretreated substrate by lamination or other means to form an enhanced, multilayer stack having beneficial properties.
    Type: Grant
    Filed: September 25, 2008
    Date of Patent: September 4, 2012
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Alexander Bimanand, Jose Mariscal, John Short
  • Publication number: 20100025533
    Abstract: A protective liner includes a base layer that can be affixed to an aircraft canopy or other substrate, a conductive polymeric interlayer positioned over the base layer, and a conductive top layer containing a reactive organic salt, or a hygroscopic salt, positioned over the conductive polymeric interlayer. The substrate can also be treated with a multilayer stack (including a substrate base coat layer, a metal layer positioned over the substrate base layer, a metal oxide layer positioned over the metal layer, and a tie layer positioned over the metal oxide layer). The protective liner can be affixed to a pretreated substrate by lamination or other means to form an enhanced, multilayer stack having beneficial properties.
    Type: Application
    Filed: September 25, 2008
    Publication date: February 4, 2010
    Inventors: Alexander Bimanand, Jose Mariscal, John Short
  • Publication number: 20100028684
    Abstract: An electrically conductive multilayer stack having good IR reflection, radar attenuation, static discharge, and other desirable properties includes a coated substrate, a primary conductive layer, and a secondary protective stack having greater durability and functionality then conventional multilayer stacks used to protect aircraft canopies and other substrates. The secondary protective stack includes at least one conductive layer that helps dissipate static charge.
    Type: Application
    Filed: September 25, 2008
    Publication date: February 4, 2010
    Inventors: Jose Mariscal, Alexander Bimanand