Patents by Inventor C. Garrett Campbell

C. Garrett Campbell 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: 11795247
    Abstract: Provided herein are polyolefin dispersants, as well as methods for producing polyolefin dispersants. The polyolefin dispersants can be defined by the formula below where Rx is cationic initiator residue; Ra is a polyolefin group; R1 and R2 are each, independently in each —(CR1R2) unit, H, alkyl, alkoxy, or alkylaryl; R3 and R4 are each, independently, H, alkyl, or alkoxy; m is an integer from 1 to 20; n is an integer from 1 to 6; r is an integer from 1 to 4; Y is a polyvalent amine linker comprising one or more tertiary amines, wherein the polyvalent amine linker does not include a primary amine or a secondary amine; and A is absent, or comprises a dispersive moiety.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: October 24, 2023
    Assignee: The University of Southern Mississippi
    Inventors: Robson F. Storey, Travis P. Holbrook, C. Garrett Campbell, Georgeta Masson
  • Publication number: 20230312870
    Abstract: Bismaleimide (BMI) and cyanate ester (CE) thermosets were developed for use as high temperature encapsulants and adhesives. These materials must withstand prolonged exposures to large thermal gradients while maintaining good structural integrity, minimal mass losses and outgassing. Bismaleimide and cyanate ester thermosets exhibit superior thermal performance compared to most epoxies and can often tolerate long exposures to temperatures >200° C. without undergoing significant degradation. In addition to excellent stability at elevated temperatures, uncured resins can have good processing attributes, such as, low viscosities and long working times. In particular, specific combinations of BMI and CE resins can provide significantly better thermal performance than the current standard epoxy system in addition to having excellent processing capabilities.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 5, 2023
    Inventors: Mathias C. Celina, Nicholas Henry Giron, Estevan Jose Martinez, C. Garrett Campbell, John Kenneth Grey
  • Patent number: 11685836
    Abstract: Nanocomposite anticorrosion coating can be achieved by depositing alternating, multilayers of a cross-linkable polymer and dispersed and aligned inorganic platelets followed by cross-linking of the cross-linkable polymer. The cross-linkable polymer can be an externally cross-linkable polymer that is cross-linked by diffusing a cross-linking agent into the deposited multilayer coating. Alternately, the cross-linkable polymer can be a functionalized cross-linkable polymer that is cross-linked by self-curing, thermal heat curing, or light (e.g., UV) following deposition of the multilayer coating.
    Type: Grant
    Filed: September 23, 2020
    Date of Patent: June 27, 2023
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Stephen John Percival, C. Garrett Campbell, Mathias C. Celina, Erik David Spoerke, Eric John Schindelholz
  • Patent number: 11618835
    Abstract: The invention is directed to a method of controlled conversion of thermosetting resins and additive manufacturing thereof by selective laser sintering. Partial curing of a thermosetting formulation can be used to increase the Tg of the resin and minimize the additional cure needed to cross-link a printed object. After printing, the partially cured material is finally cured via a slow temperature ramp maintained just below the material's evolving Tg.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: April 4, 2023
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: C. Garrett Campbell, Mathias C. Celina
  • Publication number: 20220056305
    Abstract: The invention is directed to a method of controlled conversion of thermosetting resins and additive manufacturing thereof by selective laser sintering. Partial curing of a thermosetting formulation can be used to increase the Tg of the resin and minimize the additional cure needed to cross-link a printed object. After printing, the partially cured material is finally cured via a slow temperature ramp maintained just below the material's evolving Tg.
    Type: Application
    Filed: August 12, 2021
    Publication date: February 24, 2022
    Inventors: C. Garrett Campbell, Mathias C. Celina
  • Publication number: 20210292572
    Abstract: Nanocomposite anticorrosion coating can be achieved by depositing alternating, multilayers of a cross-linkable polymer and dispersed and aligned inorganic platelets followed by cross-linking of the cross-linkable polymer. The cross-linkable polymer can be an externally cross-linkable polymer that is cross-linked by diffusing a cross-linking agent into the deposited multilayer coating. Alternately, the cross-linkable polymer can be a functionalized cross-linkable polymer that is cross-linked by self-curing, thermal heat curing, or light (e.g., UV) following deposition of the multilayer coating.
    Type: Application
    Filed: September 23, 2020
    Publication date: September 23, 2021
    Inventors: Stephen John Percival, C. Garrett Campbell, Mathias C. Celina, Erik David Spoerke, Eric John Schindelholz
  • Publication number: 20210189030
    Abstract: Provided herein are polyolefin dispersants, as well as methods for producing polyolefin dispersants. The polyolefin dispersants can be defined by the formula below where Rx is cationic initiator residue; Ra is a polyolefin group; R1 and R2 are each, independently in each —(CR1R2) unit, H, alkyl, alkoxy, or alkylaryl; R3 and R4 are each, independently, H, alkyl, or alkoxy; m is an integer from 1 to 20; n is an integer from 1 to 6; r is an integer from 1 to 4; Y is a polyvalent amine linker comprising one or more tertiary amines, wherein the polyvalent amine linker does not include a primary amine or a secondary amine; and A is absent, or comprises a dispersive moiety.
    Type: Application
    Filed: December 17, 2020
    Publication date: June 24, 2021
    Inventors: Robson F. Storey, Travis P. Holbrook, C. Garrett Campbell, Georgeta Masson
  • Patent number: 10875946
    Abstract: Provided herein are polyolefin dispersants, as well as methods for producing polyolefin dispersants. The polyolefin dispersants can be defined by the formula below where Rx is cationic initiator residue; Ra is a polyolefin group; R1 and R2 are each, independently in each —(CR1R2) unit, H, alkyl, alkoxy, or alkylaryl; R3 and R4 are each, independently, H, alkyl, or alkoxy; m is an integer from 1 to 20; n is an integer from 1 to 6; r is an integer from 1 to 4; Y is a polyvalent amine linker comprising one or more tertiary amines, wherein the polyvalent amine linker does not include a primary amine or a secondary amine; and A is absent, or comprises a dispersive moiety.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: December 29, 2020
    Assignees: Chevron Oronite Company LLC, The University of Southern Mississippi
    Inventors: Robson F. Storey, Travis P. Holbrook, C. Garrett Campbell, Georgeta Masson
  • Publication number: 20190284314
    Abstract: Provided herein are polyolefin dispersants, as well as methods for producing polyolefin dispersants. The polyolefin dispersants can be defined by the formula below where Rx is cationic initiator residue; Ra is a polyolefin group; R1 and R2 are each, independently in each —(CR1R2) unit, H, alkyl, alkoxy, or alkylaryl; R3 and R4 are each, independently, H, alkyl, or alkoxy; m is an integer from 1 to 20; n is an integer from 1 to 6; r is an integer from 1 to 4; Y is a polyvalent amine linker comprising one or more tertiary amines, wherein the polyvalent amine linker does not include a primary amine or a secondary amine; and A is absent, or comprises a dispersive moiety.
    Type: Application
    Filed: September 18, 2018
    Publication date: September 19, 2019
    Inventors: Robson F. Storey, Travis P. Holbrook, C. Garrett Campbell, Georgeta Masson