Patents by Inventor Darin Laird

Darin Laird 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: 11193039
    Abstract: A coating composition is prepared from an aqueous dispersion of a mixture of (i) urethane acrylate resin particles; (ii) acrylic resin particles; and (iii) a matting agent. A method of imparting stain resistance to a substrate, comprising applying the coating composition to at least a portion of the substrate.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: December 7, 2021
    Assignee: PPG Industries Ohio, inc.
    Inventors: Maria Wang, Dennis Leroy Faler, Pedro Velez-Herrera, Darin Laird
  • Publication number: 20200017709
    Abstract: A coating composition is prepared from an aqueous dispersion of a mixture of (i) urethane acrylate resin particles; (ii) acrylic resin particles; and (iii) a matting agent. A method of imparting stain resistance to a substrate, comprising applying the coating composition to at least a portion of the substrate.
    Type: Application
    Filed: July 16, 2018
    Publication date: January 16, 2020
    Inventors: Maria Wang, Dennis Leroy Faler, Pedro Velez-Herrera, Darin Laird
  • Patent number: 8946378
    Abstract: Conducting polymer systems for hole injection or transport layer applications including a composition comprising: a water soluble or water dispersible regioregular polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone. The polythiophene can be water soluble, water dispersible, or water swellable. They can be self-doped. The organic substituent can be an alkoxy substituent, or an alkyl substituent. OLED, PLED, SMOLED, PV, and ESD applications can be used.
    Type: Grant
    Filed: February 15, 2013
    Date of Patent: February 3, 2015
    Assignee: Solvay USA, Inc.
    Inventors: Venkataramanan Seshadri, Brian Woodworth, Christopher Greco, Darin Laird, Mathew Mathai
  • Patent number: 8399604
    Abstract: Conducting polymer systems for hole injection or transport layer applications including a composition comprising: a water soluble or water dispersible regioregular polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone. The polythiophene can be water soluble, water dispersible, or water swellable. They can be self-doped. The organic substituent can be an alkoxy substituent, or an alkyl substituent. OLED, PLED, SMOLED, PV, and ESD applications can be used.
    Type: Grant
    Filed: August 12, 2011
    Date of Patent: March 19, 2013
    Assignee: Plextronics, Inc.
    Inventors: Venkataramanan Seshadri, Brian E. Woodworth, Christopher Greco, Darin Laird, Mathew K. Mathai
  • Publication number: 20120037852
    Abstract: Conducting polymer systems for hole injection or transport layer applications including a composition comprising: a water soluble or water dispersible regioregular polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone. The polythiophene can be water soluble, water dispersible, or water swellable. They can be self-doped. The organic substituent can be an alkoxy substituent, or an alkyl substituent. OLED, PLED, SMOLED, PV, and ESD applications can be used.
    Type: Application
    Filed: August 12, 2011
    Publication date: February 16, 2012
    Inventors: Venkataramanan SESHADRI, Brian E. Woodworth, Christopher Greco, Darin Laird, Mathew K. Mathai
  • Patent number: 8017241
    Abstract: Conducting polymer systems for hole injection or transport layer applications including a composition comprising: a water soluble or water dispersible regioregular polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone. The polythiophene can be water soluble, water dispersible, or water swellable. They can be self-doped. The organic substituent can be an alkoxy substituent, or an alkyl substituent. OLED, PLED, SMOLED, PV, and ESD applications can be used.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: September 13, 2011
    Assignee: Plextronics, Inc.
    Inventors: Venkataramanan Seshadri, Brian E. Woodworth, Christopher Greco, Darin Laird, Mathew K. Mathai
  • Patent number: 7838624
    Abstract: Synthesis of regioregular thiophene-based polymers (PTs) and their functionalized counterparts via metal assisted cross-coupling polymerizations utilizing mixed halogen substituted aryl halide monomer precursors. The described method provides a means to control structural homogeneity and regioregularity and the electronic/spectroscopic properties of functionalized PTs, and leads to improved performance of organic semiconductor devices such as OPVs and/or OFETs. Asymmetrical monomers can be used.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: November 23, 2010
    Assignee: Plextronics, Inc.
    Inventors: Darin Laird, Elena Sheina
  • Publication number: 20090066233
    Abstract: Synthesis of regioregular thiophene-based polymers (PTs) and their functionalized counterparts via metal assisted cross-coupling polymerizations utilizing mixed halogen substituted aryl halide monomer precursors. The described method provides a means to control structural homogeneity and regioregularity and the electronic/spectroscopic properties of functionalized PTs, and leads to improved performance of organic semiconductor devices such as OPVs and/or OFETs. Asymmetrical monomers can be used.
    Type: Application
    Filed: May 14, 2008
    Publication date: March 12, 2009
    Inventors: Darin Laird, Elena Sheina
  • Publication number: 20080315751
    Abstract: Aryl-substituted conjugated polymers are described having improved properties. The polymers include a polymer backbone that includes heterocyclic repeat units. At least some of the heterocyclic repeat units have an aryl substituent attached thereto and at least some of these aryl substituents have a branched alkyl substituent attached thereto. The conjugated polymer are well-suited for use in a variety of electronic devices, including photovoltaic cells, light-emitting diodes, and transistors. Tunability of material, spectroscopic, and/or electronic properties is possible.
    Type: Application
    Filed: May 14, 2008
    Publication date: December 25, 2008
    Inventors: Elena Sheina, Darin Laird
  • Publication number: 20080299293
    Abstract: A solvent system for a conjugated polymer that includes at least two different solvents, at least one first solvent and at least one second solvent wherein the second solvent comprises a heterocyclic ring to improve the characteristics of materials made therefrom. Use of the solvent system to improve the electronic and/or optoelectronic characteristics of materials that include conjugated polymers, such as polythiophenes, optionally including n-acceptors, which are cast from a composition that includes the solvent system. In some embodiments the improved characteristics include higher absorption of solar radiation, increased current densities and higher power conversion efficiencies. As a result, materials made with the present solvent systems are well-suited for use in a variety of electronic devices including, photovoltaic cells, light emitting diodes, and transistors.
    Type: Application
    Filed: April 30, 2008
    Publication date: December 4, 2008
    Inventors: Elena Sheina, Darin Laird, Caton Goodman
  • Publication number: 20080248313
    Abstract: Conducting polymer systems for hole injection or transport layer applications including a composition comprising: a water soluble or water dispersible regioregular polythiophene comprising (i) at least one organic substituent, and (ii) at least one sulfonate substituent comprising sulfonate sulfur bonding directly to the polythiophene backbone. The polythiophene can be water soluble, water dispersible, or water swellable. They can be self-doped. The organic substituent can be an alkoxy substituent, or an alkyl substituent. OLED, PLED, SMOLED, PV, and ESD applications can be used.
    Type: Application
    Filed: July 13, 2007
    Publication date: October 9, 2008
    Inventors: Venkataramanan Seshadri, Brian E. Woodworth, Christopher Greco, Darin Laird, Mathew K. Mathai
  • Publication number: 20070065590
    Abstract: Latent doping is provided wherein a conducting polymer is mixed with a dopant in solution without the doping reaction occurring unless solvent is removed. Regioregular polythiophenes are a particularly important embodiment. A composition comprising (i) at least one polymer comprising conjugation in the polymer backbone, (ii) at least one dopant for the polymer, (iii) at least one solvent for the polymer and latent dopant, wherein the polymer, the latent dopant, and the solvent are formulated so that the latent dopant does not substantially dope the polymer when formulated, but does substantially react with the polymer when the solvent is removed. Formulation of the composition can comprise adjusting the order of mixing, the amounts of the components, and the temperature. Methods of formulating the compositions and methods of using the compositions are also provided. OLED, PLED, photovoltaic, and other organic electronic devices can be fabricated.
    Type: Application
    Filed: July 31, 2006
    Publication date: March 22, 2007
    Inventors: Shawn Williams, Darin Laird, Caton Goodman, Christopher Greco, Jaideep Rajput
  • Publication number: 20060237695
    Abstract: Polythiophene copolymers having tunable work functions and oxidation voltage onset. The ratio of monomer can be varied to achieve the desired property for a particular application. One monomer can be unsubstituted thiophene. The copolymer microstructure can be random. Another monomer can be a 3-substituted thiophene such as 3-alkyl or a heteroatom substituted substituent. Heterojunction polymer photovoltaic cells can be fabricated with excellent voltage onset properties compared to devices having corresponding homopolymers.
    Type: Application
    Filed: March 16, 2006
    Publication date: October 26, 2006
    Inventors: Shawn Williams, Darin Laird, Caton Goodman, Traian Sarbu, Shijun Jia
  • Publication number: 20060175582
    Abstract: Compositions for use in HIL/HTL applications include intrinsically conductive polymer, planarizing agent, and dopant, which are soluble in non-aqueous solvents. Block copolymers of regioregular alkyl/alkoxy- and aryl-substituted polythiophenes can be used. The compositions can be formed into thin films. Excellent efficiency and lifetime stability can be achieved.
    Type: Application
    Filed: February 9, 2006
    Publication date: August 10, 2006
    Inventors: Troy Hammond, Shawn Williams, Elena Sheina, Darin Laird, Andrew Hannah, Shijun Jia
  • Publication number: 20060118901
    Abstract: Regio-regular polythiophenes used in diodes which are not light emitting or photovoltaic. High quality, processable thin film polymer films can be made. The thin film can have a thickness of about 50 nm to about one micron, and the conductive thin film can be applied by spin casting, drop casting, screening, ink-jetting, transfer or roll coating. The polythiophenes can be homopolymers or copolymers. The regio-regular poly(3-substitutedthiophene) can be derivatized so that the 3-substituent is an alkyl, aryl, or alkyl/aryl moiety with a heteroatom substitution in either the ?- or beta-position of the 3-substituent.
    Type: Application
    Filed: November 16, 2005
    Publication date: June 8, 2006
    Inventors: Shawn Williams, Troy Hammond, Darin Laird
  • Publication number: 20060078761
    Abstract: Regioregular polythiophenes having heteroatoms in the substituents can be used in hole injection layer and hole transport layers for electroluminescent devices. Copolymers and organic oxidants can be used. Homopolymers can be used. Metallic impurities can be removed. The heteroatom can be oxygen and can be substituted at the 3-position. Advantages include versatility, synthetic control, and good thermal stability. Different device designs can be used.
    Type: Application
    Filed: September 26, 2005
    Publication date: April 13, 2006
    Inventors: Shawn Williams, Darin Laird, Troy Hammond
  • Publication number: 20060076050
    Abstract: Regioregular polythiophene polymers can be used in photovoltaic applications including copolymers and blends. The polymer can comprise heteroatoms in the side groups. Better efficiencies can be achieved.
    Type: Application
    Filed: September 26, 2005
    Publication date: April 13, 2006
    Inventors: Shawn Williams, Darin Laird, Troy Hammond, Andrew Hannah, Elena Sheina, Shijun Jia