Patents by Inventor Robert W. Walters

Robert W. Walters 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).

  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20200350504
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated ligands having a structure of In the vgs3, each of the E1 atoms is selected from C and N, except that E1g is selected from C, N, and S. The E1 atoms collectively comprise an 18 pi-electron system, provided that E1a and E1p are different. The R1 substituents are each, independently, H, hydrocarbyl, heteroatom substituted hydrocarbyl, cyano, fluoro, OR2a, SR2a, NR2aR2b, BR2aR2b, or SiR2aR2bR2c, where the R2 substituents are each, independently, hydrocarbyl or heteroatom substituted hydrocarbyl. Any of the R1 or R2 substituents can be linked to form a saturated or unsaturated, aromatic or non-aromatic ring, provided that the R1 substituents are not present when the corresponding one of E atoms is N or S. Organic light emitting diode devices comprising these compounds are also described.
    Type: Application
    Filed: July 13, 2020
    Publication date: November 5, 2020
    Applicant: Universal Display Corporation
    Inventors: DAVID KNOWLES, Chun Lin, Peter Mackenzie, Jui-Yi Tsai, Robert W. Walters, Scott Beers, Cory S. Brown, Walter Yeager
  • Organic electroluminescent materials and devices
    Patent number: 10749121
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: August 18, 2020
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: David Knowles, Chun Lin, Peter Mackenzie, Jui-Yi Tsai, Robert W. Walters, Scott Beers, Cory S. Brown, Walter Yeager
  • Silole and Germole Fused Ring Photochromic Compounds
    Publication number: 20200172798
    Abstract: The present invention relates to silole and germole fused ring photochromic compounds represented, with some embodiments, by the following Formula (Ia), (Ia) With reference to Formula (Ia): M includes Si or Ge; Ring A and Ring B each independently include aryl or heteroaryl; and the photochromic compound is a thermally reversible photochromic compound. The present invention also relates to photochromic compositions and photochromic articles, such as photochromic ophthalmic articles that include one or more photochromic compounds represented, with some embodiments, by Formula (Ia).
    Type: Application
    Filed: June 30, 2017
    Publication date: June 4, 2020
    Inventors: Ryan Stayshich, Robert W. Walters
  • STABILITY OLED MATERIALS AND DEVICES
    Publication number: 20200006674
    Abstract: Organic light emitting materials and devices comprising phosphorescent metal complexes comprising ligands comprising aryl or heteroaryl groups substituted at both ortho positions are described. An organic light emitting device, comprising: an anode, a hole transport layer; an organic emissive layer comprising an emissive layer host and an emissive dopant; an electron impeding layer; and electron transport layer; and a cathode disposed, in that order, over a substrate.
    Type: Application
    Filed: July 1, 2019
    Publication date: January 2, 2020
    Applicant: Universal Display Corporation
    Inventors: Chun LIN, Peter B. MACKENZIE, Robert W. WALTERS, Jui-Yi TSAI, Cory S. BROWN, Jun DENG
  • Photochromic thienochromene compounds
    Patent number: 10501477
    Abstract: The present invention relates to photochromic compounds, such as thienochromene compounds represented by the following Formulas (1a) and/or (1b). The present invention also relates to photochromic compositions and articles containing one or more such photochromic thienochromene compounds.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: December 10, 2019
    Assignee: Transitions Optical, Inc.
    Inventors: Jun Deng, Brian R. Stepp, Eric Spitler, Wenjing Xiao, Massimiliano Tomasulo, Robert W. Walters
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20190341563
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Application
    Filed: July 15, 2019
    Publication date: November 7, 2019
    Applicant: Universal Display Corporation
    Inventors: David KNOWLES, Chun LIN, Peter MACKENZIE, Jui-Yi TSAI, Robert W. WALTERS, Scott BEERS, Cory S. BROWN, Walter YEAGER
  • Organic electroluminescent materials and devices
    Patent number: 10403831
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: September 3, 2019
    Assignee: Universal Display Corporation
    Inventors: David Knowles, Chun Lin, Peter Mackenzie, Jui-Yi Tsai, Robert W. Walters, Scott Beers, Cory S. Brown, Walter Yeager
  • Stability OLED materials and devices
    Patent number: 10381579
    Abstract: Organic light emitting materials and devices comprising phosphorescent metal complexes comprising ligands comprising aryl or heteroaryl groups substituted at both ortho positions are described. An organic light emitting device, comprising: an anode; a hole transport layer; an organic emissive layer comprising an emissive layer host and an emissive dopant; an electron impeding layer; an electron transport layer; and a cathode disposed, in that order, over a substrate.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: August 13, 2019
    Assignee: Universal Display Corporation
    Inventors: Chun Lin, Peter B. Mackenzie, Robert W. Walters, Jui-Yi Tsai, Cory S. Brown, Jun Deng
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20190058138
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Application
    Filed: October 16, 2018
    Publication date: February 21, 2019
    Applicant: Universal Display Corporation
    Inventors: David KNOWLES, Chun LIN, Peter MACKENZIE, Jui-Yi TSAI, Robert W. WALTERS, Scott BEERS, Cory S. BROWN, Walter YEAGER
  • Organic electroluminescent materials and devices
    Patent number: 10158090
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: December 18, 2018
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: David Knowles, Chun Lin, Peter Mackenzie, Jui-Yi Tsai, Robert W. Walters, Scott Beers, Cory S. Brown, Walter Yeager
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20180130963
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Application
    Filed: January 3, 2018
    Publication date: May 10, 2018
    Applicant: Universal Display Corporation
    Inventors: David KNOWLES, Chun LIN, Peter MACKENZIE, Jui-Yi TSAI, Robert W. WALTERS, Scott BEERS, Cory S. BROWN, Walter YEAGER
  • Photochromic Thienochromene Compounds
    Publication number: 20180051037
    Abstract: The present invention relates to photochromic compounds, such as thienochromene compounds represented by the following Formulas (1a) and/or (1b). The present invention also relates to photochromic compositions and articles containing one or more such photochromic thienochromene compounds.
    Type: Application
    Filed: March 10, 2015
    Publication date: February 22, 2018
    Inventors: Jun Deng, Brian R. Stepp, Eric Spitler, Wenjing Xiao, Massimiliano Tamasulo, Robert W. Walters
  • Organic electroluminescent materials and devices
    Patent number: 9893306
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: February 13, 2018
    Assignee: Universal Display Corporation
    Inventors: David Knowles, Chun Lin, Peter Mackenzie, Jui-Yi Tsai, Robert W. Walters, Scott Beers, Cory S. Brown, Walter Yeager
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20170331055
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Application
    Filed: July 26, 2017
    Publication date: November 16, 2017
    Applicant: Universal Display Corporation
    Inventors: David KNOWLES, Chun LIN, Peter MACKENZIE, Jui-Yi TSAI, Robert W. WALTERS, Scott BEERS, Cory S. BROWN, Walter YEAGER
  • Organic electroluminescent materials and devices
    Patent number: 9722193
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: August 1, 2017
    Assignee: Universal Display Corporation
    Inventors: David Knowles, Chun Lin, Peter MacKenzie, Jui-Yi Tsai, Robert W. Walters, Scott Beers, Cory S. Brown, Walter Yeager
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20170084851
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Application
    Filed: November 30, 2016
    Publication date: March 23, 2017
    Applicant: Universal Display Corporation
    Inventors: David KNOWLES, Chun LIN, Peter MACKENZIE, Jui-Yi TSAI, Robert W. WALTERS, Scott BEERS, Cory S. BROWN, Walter YEAGER
  • Organic electroluminescent materials and devices
    Patent number: 9548462
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: January 17, 2017
    Assignee: Universal Display Corporation
    Inventors: David Knowles, Chun Lin, Peter Mackenzie, Jui-Yi Tsai, Robert W. Walters, Scott Beers, Cory S. Brown, Walter Yeager
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20160240798
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a: 1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Application
    Filed: January 29, 2016
    Publication date: August 18, 2016
    Applicant: Universal Display Corporation
    Inventors: David KNOWLES, Chun LIN, Peter MACKENZIE, Jui-Yi TSAI, Robert W. WALTERS, Scott BEERS, Cory S. BROWN, Walter YEAGER
  • Organic electroluminescent materials and devices
    Patent number: 9281483
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Grant
    Filed: June 19, 2015
    Date of Patent: March 8, 2016
    Assignee: Universal Display Corporation
    Inventors: David Knowles, Chun Lin, Peter Mackenzie, Jui-Yi Tsai, Robert W. Walters, Scott Beers, Cory S. Brown, Walter Yeager
  • ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES
    Publication number: 20150287935
    Abstract: Compounds comprising phosphorescent metal complexes comprising cyclometallated imidazo[1,2-f]phenanthridine and diimidazo[1,2-a:1?,2?-c]quinazoline ligands, or isoelectronic or benzannulated analogs thereof, are described. Organic light emitting diode devices comprising these compounds are also described.
    Type: Application
    Filed: June 19, 2015
    Publication date: October 8, 2015
    Applicant: Universal Display Corporation
    Inventors: David KNOWLES, Chun LIN, Peter MACKENZIE, Jui-Yi TSAI, Robert W. WALTERS, Scott BEERS, Cory S. BROWN, Walter YEAGER