Patents by Inventor Peter Tham

Peter Tham 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: 12279615
    Abstract: A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.
    Type: Grant
    Filed: November 30, 2023
    Date of Patent: April 22, 2025
    Assignee: Koppers Performance Chemicals Inc.
    Inventors: Jun Zhang, Peter Tham, John Horton
  • Publication number: 20250006901
    Abstract: A dispersion, methods of making the same, applications of the dispersion to graphitic material and the resulting coated particles are disclosed. The dispersion includes ?55% wt. coal tar pitch (softening point 100° C.-195° C.), ?60% wt. dispersant, and the balance a non-aromatic solvent such as water or alcohol. Pitch particles in the dispersion are preferably <10 ?m with a distribution of D50<15 ?m. The pitch particles are micronized, such as by dry and/or wet milling with the dispersant and aqueous solvent to achieve the desired pitch particle size and distribution. This aqueous dispersion may be mixed with natural or synthetic graphitic material having a diameter of 5-20 ?m in a ratio of 5%-30% pitch to graphite, dried and carbonized to form coated particles having a graphitic core at least partially coated by pitch particles.
    Type: Application
    Filed: September 8, 2022
    Publication date: January 2, 2025
    Inventors: Stacey McKINNEY, Jun Zhang, Billy Jay CAIRNS, Peter THAM, Carl Camille MUELLER, Kevin J. COSTANZO, Brian R. Jones, Daniel P. GRAY
  • Publication number: 20240099303
    Abstract: A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.
    Type: Application
    Filed: November 30, 2023
    Publication date: March 28, 2024
    Inventors: Jun Zhang, Peter Tham, John Horton
  • Patent number: 11882833
    Abstract: A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: January 30, 2024
    Assignee: Koppers Performance Chemicals Inc.
    Inventors: Jun Zhang, Peter Tham, John Horton
  • Publication number: 20230150166
    Abstract: A method for treating a wood substrate is provided. The method comprises contacting the wood substrate in a field application with an aqueous composition. The contacting is performed at a pressure of less than 20 psia. The aqueous composition comprises, by total weight of the aqueous composition, 1.0% to 10.0% by weight of a micronized basic copper carbonate, 0.35% to 2.5% by weight of a quaternary ammonium compound, and at least 80% by weight of water.
    Type: Application
    Filed: November 15, 2021
    Publication date: May 18, 2023
    Inventors: Jun Zhang, Peter Tham, Craig Wilson
  • Publication number: 20230080961
    Abstract: A dispersion, methods of making the same, applications of the dispersion to graphitic material and the resulting coated particles are disclosed. The dispersion includes ?55% wt. coal tar pitch (softening point 100° C.-95° C.), ?60% wt. dispersant, and the balance a non-aromatic solvent such as water or alcohol. Pitch particles in the dispersion are preferably ?10 ?m with a distribution of D50<15 ?m. The pitch particles are micronized, such as by dry and/or wet milling with the dispersant and aqueous solvent to achieve the desired pitch particle size and distribution. This aqueous dispersion may be mixed with natural or synthetic graphitic material having a diameter of 5-20 ?m in a ratio of 5%-30% pitch to graphite, dried and carbonized to form coated particles having a graphitic core at least partially coated by pitch particles.
    Type: Application
    Filed: September 8, 2022
    Publication date: March 16, 2023
    Applicant: Koppers Delaware, Inc.
    Inventors: Stacey McKinney, Jun Zhang, Billy Jay Cairns, Peter Tham, Carl Camille Mueller, Kevin J. Costanzo, Brian R. Jones, Daniel P. Gray
  • Publication number: 20220000115
    Abstract: A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.
    Type: Application
    Filed: September 20, 2021
    Publication date: January 6, 2022
    Inventors: Jun Zhang, Peter Tham, John Horton
  • Publication number: 20210352908
    Abstract: The present invention relates to a method for producing copper ammonia solutions by reacting a cuprous oxide with ammonia, carbon dioxide and an oxidant. The resulting copper-containing solution can then be used to formulate a variety of wood preserving products.
    Type: Application
    Filed: July 28, 2021
    Publication date: November 18, 2021
    Inventors: Jun Zhang, Peter Tham
  • Patent number: 11173626
    Abstract: Stable wood preservative formulations comprising an amine copper complex, an azole compound, a cationic surfactant, and optionally, an organic solvent, are disclosed. The wood preservative formulations exhibit long-term stability and remain homogeneous, without the need for agitation.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: November 16, 2021
    Assignee: KOPPERS PERFORMANCE CHEMICALS INC.
    Inventors: Jun Zhang, Peter Tham
  • Patent number: 11140901
    Abstract: A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: October 12, 2021
    Assignee: KOPPERS PERFORMANCE CHEMICALS INC.
    Inventors: Jun Zhang, Peter Tham, John Horton
  • Patent number: 11102980
    Abstract: The present invention relates to a method for producing copper ammonia solutions by reacting a cuprous oxide with ammonia, carbon dioxide and an oxidant. The resulting copper-containing solution can then be used to formulate a variety of wood preserving products.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: August 31, 2021
    Assignee: Koppers Performance Chemicals Inc.
    Inventors: Jun Zhang, Peter Tham
  • Publication number: 20190246643
    Abstract: A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.
    Type: Application
    Filed: December 11, 2018
    Publication date: August 15, 2019
    Inventors: Jun Zhang, Peter Tham, John Horton
  • Publication number: 20190246641
    Abstract: A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.
    Type: Application
    Filed: December 11, 2018
    Publication date: August 15, 2019
    Inventors: Jun Zhang, Peter Tham, John Horton
  • Publication number: 20190246642
    Abstract: A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.
    Type: Application
    Filed: December 11, 2018
    Publication date: August 15, 2019
    Inventors: Jun Zhang, Peter Tham, John Horton
  • Publication number: 20190184597
    Abstract: Stable wood preservative formulations comprising an amine copper complex, an azole compound, a cationic surfactant, and optionally, an organic solvent, are disclosed. The wood preservative formulations exhibit long-term stability and remain homogeneous, without the need for agitation.
    Type: Application
    Filed: July 10, 2017
    Publication date: June 20, 2019
    Inventors: Jun Zhang, Peter Tham
  • Publication number: 20190152093
    Abstract: The present invention is directed to amine soluble, or solid copper triazole based wood preservative formulations containing certain types of quaternary ammonium compounds, or nonionic sufactants, and the use of these quaternary ammonium compound-, or nonionic surfactant-containing formulations to pressure treat and preserve wood. The addition of the quaternary ammonium compounds, or nonionic surfactants to the wood preservation treatment solutions allows improved penetration of the copper from the solution into wood and reduces the duration of time required to effectively pressure treat the wood with the preservation composition.
    Type: Application
    Filed: November 15, 2018
    Publication date: May 23, 2019
    Inventors: Jun Zhang, Peter Tham, Barry Sewell, Jacob T. McBrayer, John Horton
  • Publication number: 20190090493
    Abstract: The present invention relates to a method for producing copper ammonia solutions by reacting a cuprous oxide with ammonia, carbon dioxide and an oxidant. The resulting copper-containing solution can then be used to formulate a variety of wood preserving products.
    Type: Application
    Filed: August 28, 2018
    Publication date: March 28, 2019
    Inventors: Jun Zhang, Peter Tham
  • Patent number: 10194661
    Abstract: Disclosed herein are methods of making solid bodies of dazomet for use in internal remedial treatments of wood and methods of applying such solid bodies to wooden structures and manufacturing such solid bodies. The solid bodies can be easily transported and inserted into treatment holes in utility poles, wooden pilings, and other wooden structures, that can deliver a dose of insecticide and fungicide that combats internal decay in the wood.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: February 5, 2019
    Assignee: Osmose Utilities Services, Inc.
    Inventors: Thomas Pope, Douglas J. Herdman, Peter Tham
  • Publication number: 20180317486
    Abstract: A synergistic aqueous wood preservative composition comprising a copper compound and penflufen. The copper compounds of the compositions of the invention may be soluble, partially solubilized or micronized particles. The penflufen of the compositions of the invention may be solubilized, emulsified or particulate. The wood preservative compositions of the present invention are surprisingly provided as stable dispersions and confer surprising and unexpected resistance to treated wood and wood products.
    Type: Application
    Filed: December 13, 2017
    Publication date: November 8, 2018
    Inventors: Jun Zhang, Peter Tham, John Horton
  • Publication number: 20180027814
    Abstract: Disclosed herein are methods of making solid bodies of dazomet for use in internal remedial treatments of wood and methods of applying such solid bodies to wooden structures and manufacturing such solid bodies. The solid bodies can be easily transported and inserted into treatment holes in utility poles, wooden pilings, and other wooden structures, that can deliver a dose of insecticide and fungicide that combats internal decay in the wood.
    Type: Application
    Filed: October 5, 2017
    Publication date: February 1, 2018
    Inventors: Thomas Pope, Douglas J. Herdman, Peter Tham