Patents by Inventor Khushroo H. Lakdawala

Khushroo H. Lakdawala 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: 9546300
    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: Grant
    Filed: March 15, 2013
    Date of Patent: January 17, 2017
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Alexander Bimanand, Krishna K. Uprety, Khushroo H. Lakdawala
  • Patent number: 9545042
    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: Grant
    Filed: March 14, 2014
    Date of Patent: January 10, 2017
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Alexander Bimanand, Krishna K. Uprety, Khushroo H. Lakdawala
  • Publication number: 20160376025
    Abstract: A coated substrate includes: a substrate; an electrically conductive multilayer stack on the substrate; and a coating on the electrically conductive multilayer stack. A thickness of the coating is 5 to 10 mils and the coating includes a conductive, anti-static tiecoat on the electrically conductive multilayer stack; and a conductive, anti-static topcoat on the conductive, anti-static tiecoat. The conductive, anti-static tiecoat and the conductive, anti-static topcoat are formed from 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.
    Type: Application
    Filed: April 2, 2015
    Publication date: December 29, 2016
    Inventors: Alexander Bimanand, Krishna K. Uprety, Khushroo H. Lakdawala
  • Patent number: 9532405
    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: February 10, 2016
    Date of Patent: December 27, 2016
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Krishna K. Uprety, Alexander Bimanand, Khushroo H. Lakdawala
  • Publication number: 20160242282
    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 3, 2016
    Publication date: August 18, 2016
    Inventors: Krishna K. Uprety, Khushroo H. Lakdawala, Alexander Bimanand
  • Publication number: 20160221662
    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: April 8, 2016
    Publication date: August 4, 2016
    Inventors: Krishna K. Uprety, Alexander Bimanand, Khushroo H. Lakdawala
  • Publication number: 20160174296
    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: Application
    Filed: February 10, 2016
    Publication date: June 16, 2016
    Inventors: Krishna K. Uprety, Alexander Bimanand, Khushroo H. Lakdawala
  • 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: 20150345006
    Abstract: A method of manufacturing indium tin oxide includes sputtering indium and tin from a target onto a substrate, the sputtering including moving the target along a path over the substrate. The indium tin oxide may have a sheet resistance less than 0.5?/?. An indium film includes: a first moving target sputtered indium tin oxide layer; a second moving target sputtered indium tin oxide layer on the first moving target sputtered indium tin oxide layer; and a third moving target sputtered indium tin oxide layer on the second moving target sputtered indium tin oxide layer. A transparency includes the indium tin oxide, and a flying vehicle includes the transparency.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 3, 2015
    Inventors: Krishna K. Uprety, Khushroo H. Lakdawala, Russell Shellenberger, Mahmood Ahmad Ali
  • 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: 20150171624
    Abstract: A system for monitoring performance of an aircraft windshield includes a sensor comprising a sensory contact and an evaluation unit. The sensory contact is in physical contact with one or more components of the windshield, and generates a signal representative of the performance of the component(s) of the windshield. An electrical connector is secured to the surface of the windshield facing the interior of the aircraft. The signal from the sensory contact passes through the connector to the evaluation unit. The evaluation unit acts on the signal to determine the performance of the component(s) of the windshield, wherein the evaluation unit is spaced from and out of physical contact with the windshield and the electrical connector, and is in electrical contact with the electrical connector.
    Type: Application
    Filed: February 27, 2015
    Publication date: June 18, 2015
    Inventors: Nicolas B. Duarte, Yu Jiao, Khushroo H. Lakdawala, Arthur C. Scott, Monroe A. Stone
  • Publication number: 20150132580
    Abstract: A composition includes an isocyanate, a polyether diol, a branched short chain diol having a backbone including carbon atoms in a range of 1 to 9 and at least one branching group, and a cross-linker having a hydroxyl functionality in a range of 2.2 to 4. A films includes the composition and an interlayer includes the film. Transparencies including the interlayer and methods of making the same are further disclosed.
    Type: Application
    Filed: January 21, 2015
    Publication date: May 14, 2015
    Inventors: Razmik Boghossian, Khushroo H. Lakdawala
  • Patent number: 8956728
    Abstract: A composition including an isocyanate, a polyether polyol and a low molecular weight polyester polyol having a weight average molecular weight in a range of about 200 g/mol to about 1000 g/mol is disclosed. Films including the composition and interlayers including the film are also disclosed. Transparencies including the interlayer and methods of making the same are further disclosed.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: February 17, 2015
    Assignee: PPG Industries Ohio, Inc.
    Inventors: Razmik Boghossian, Khushroo H Lakdawala
  • 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: 20140154513
    Abstract: A composition including an isocyanate, a polyether polyol and a low molecular weight polyester polyol having a weight average molecular weight in a range of about 200 g/mol to about 1000 g/mol is disclosed. Films including the composition and interlayers including the film are also disclosed. Transparencies including the interlayer and methods of making the same are further disclosed.
    Type: Application
    Filed: November 30, 2012
    Publication date: June 5, 2014
    Applicant: PPG INDUSTRIES OHIO, INC.
    Inventors: Razmik Boghossian, 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