Patents by Inventor Bruce Virnelson

Bruce Virnelson 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).

  • Actinic radiation-curable urethane/urea-containing aerospace coatings and sealants
    Patent number: 11898054
    Abstract: Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured.
    Type: Grant
    Filed: November 17, 2020
    Date of Patent: February 13, 2024
    Assignee: PRC-DESOTO INTERNATIONAL, INC.
    Inventors: Bruce Virnelson, Chandra Rao, Renhe Lin
  • Low density aerospace compositions and sealants
    Patent number: 11760909
    Abstract: Low density aerospace compositions and sealants are disclosed. The low density compositions and sealants are characterized by a high volume percent loading of low density microcapsules.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: September 19, 2023
    Assignee: PRC-DESOTO INTERNATIONAL, INC.
    Inventor: Bruce Virnelson
  • Dual Cure Sealants
    Publication number: 20230242710
    Abstract: Compositions that are curable by free radical redox reactions are disclosed. Free radical curing reactions between polythiols and polyalkyenyls are initiated by the reaction of metal complexes and organic peroxides. The compositions are useful as sealants.
    Type: Application
    Filed: April 4, 2023
    Publication date: August 3, 2023
    Applicant: PRC-DeSoto International, Inc.
    Inventors: JianCheng Liu, Srikant Pathak, Bruce Virnelson
  • Dual cure sealants
    Patent number: 11655340
    Abstract: Compositions that are curable by free radical redox reactions are disclosed. Free radical curing reactions between polythiols and polyalkyenyls are initiated by the reaction of metal complexes and organic peroxides. The compositions are useful as sealants.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: May 23, 2023
    Assignee: PRC-DESOTO INTERNATIONAL, INC.
    Inventors: JianCheng Liu, Srikant Pathak, Bruce Virnelson
  • FREE RADICAL POLYMERIZABLE ADHESION-PROMOTING INTERLAYER COMPOSITIONS AND METHODS OF USE
    Publication number: 20210402748
    Abstract: Adhesion-promoting compositions and the use of the adhesion-promoting compositions to provide adhesion-promoting interlayers to enhance adhesion between adjoining layers of sulfur-containing sealants are disclosed. In repair applications, the adhesion-promoting compositions can enhance the adhesion of an overlying radiation-curable sulfur-containing sealant to a damaged or aged sulfur-containing sealant.
    Type: Application
    Filed: September 8, 2021
    Publication date: December 30, 2021
    Inventors: JianCheng Liu, Chu Ran Zheng, Kevin Cheng, Bruce Virnelson
  • Free radical polymerizable adhesion-promoting interlayer compositions and methods of use
    Patent number: 11173692
    Abstract: Adhesion-promoting compositions and the use of the adhesion-promoting compositions to provide adhesion-promoting interlayers to enhance adhesion between adjoining layers of sulfur-containing sealants are disclosed. In repair applications, the adhesion-promoting compositions can enhance the adhesion of an overlying radiation-curable sulfur-containing sealant to a damaged or aged sulfur-containing sealant.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: November 16, 2021
    Assignee: PRC-DeSoto International, Inc.
    Inventors: JianCheng Liu, Chu Ran Zheng, Kevin Cheng, Bruce Virnelson
  • LOW DENSITY AEROSPACE COMPOSITIONS AND SEALANTS
    Publication number: 20210309898
    Abstract: Low density aerospace compositions and sealants are disclosed. The low density compositions and sealants are characterized by a high volume percent loading of low density microcapsules.
    Type: Application
    Filed: June 21, 2021
    Publication date: October 7, 2021
    Inventor: Bruce Virnelson
  • Low density aerospace compositions and sealants
    Patent number: 11066584
    Abstract: Low density aerospace compositions and sealants are disclosed. The low density compositions and sealants are characterized by a high volume percent loading of low density microcapsules.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: July 20, 2021
    Assignee: PRC-DeSoto International, Inc.
    Inventor: Bruce Virnelson
  • PARTIALLY REACTED SILANE PRIMER COMPOSITIONS
    Publication number: 20210198496
    Abstract: Partially reacted alkoxysilane compositions, the use of partially reacted alkoxysilane compositions as adhesion-promoting primer coatings, and methods of using the partially reacted alkoxysilane compositions and coatings are disclosed.
    Type: Application
    Filed: March 15, 2021
    Publication date: July 1, 2021
    Inventors: SRIKANT PATHAK, CHU RAN ZHENG, BRUCE VIRNELSON
  • FREE RADICAL POLYMERIZABLE ADHESION-PROMOTING INTERLAYER COMPOSITIONS AND METHODS OF USE
    Publication number: 20210187922
    Abstract: Adhesion-promoting compositions and the use of the adhesion-promoting compositions to provide adhesion-promoting interlayers to enhance adhesion between adjoining layers of sulfur-containing sealants are disclosed. In repair applications, the adhesion-promoting compositions can enhance the adhesion of an overlying radiation-curable sulfur-containing sealant to a damaged or aged sulfur-containing sealant.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 24, 2021
    Applicant: PRC-DeSoto International, Inc.
    Inventors: JianCheng Liu, Chu Ran Zheng, Kevin Cheng, Bruce Virnelson
  • ACTINIC RADIATION-CURABLE URETHANE/UREA-CONTAINING AEROSPACE COATINGS AND SEALANTS
    Publication number: 20210071032
    Abstract: Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured.
    Type: Application
    Filed: November 17, 2020
    Publication date: March 11, 2021
    Inventors: Bruce Virnelson, Chandra Rao, Renhe Lin
  • Actinic radiation-curable urethane/urea-containing aerospace coatings and sealants
    Patent number: 10883016
    Abstract: Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: January 5, 2021
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Bruce Virnelson, Chandra Rao, Renhe Lin
  • Methods for making cured sealants by actinic radiation and related compositions
    Patent number: 10844256
    Abstract: Disclosed are methods for making a cured sealant. The methods include depositing an uncured sealant composition on a substrate and exposing the uncured sealant composition to actinic radiation to provide a cured sealant. The uncured sealant composition includes a thiol-terminated polythioether, a polyene comprising a polyvinyl ether and/or a polyallyl compound, and a hydroxy-functional vinyl ether. Related sealant compositions are also disclosed.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: November 24, 2020
    Assignee: PRC DeSoo International, Inc.
    Inventors: Raquel Keledjian, Renhe Lin, Chandra Rao, Bruce Virnelson
  • Dual Cure Sealants
    Publication number: 20200199300
    Abstract: Compositions that are curable by free radical redox reactions are disclosed. Free radical curing reactions between polythiols and polyalkyenyls are initiated by the reaction of metal complexes and organic peroxides. The compositions are useful as sealants.
    Type: Application
    Filed: June 8, 2018
    Publication date: June 25, 2020
    Applicant: PRC-DeSoto International, Inc.
    Inventors: JianCheng Liu, Srikant Pathak, Bruce Virnelson
  • METHODS FOR MAKING CURED SEALANTS BY ACTINIC RADIATION AND RELATED COMPOSITIONS
    Publication number: 20190211244
    Abstract: Disclosed are methods for making a cured sealant. The methods include depositing an uncured sealant composition on a substrate and exposing the uncured sealant composition to actinic radiation to provide a cured sealant. The uncured sealant composition includes a thiol-terminated polythioether, a polyene comprising a polyvinyl ether and/or a polyallyl compound, and a hydroxy-functional vinyl ether. Related sealant compositions are also disclosed.
    Type: Application
    Filed: March 15, 2019
    Publication date: July 11, 2019
    Inventors: RAQUEL KELEDJIAN, RENHE LIN, CHANDRA RAO, BRUCE VIRNELSON
  • LOW DENSITY AEROSPACE COMPOSITIONS AND SEALANTS
    Publication number: 20190211243
    Abstract: Low density aerospace compositions and sealants are disclosed. The low density compositions and sealants are characterized by a high volume percent loading of low density microcapsules.
    Type: Application
    Filed: March 15, 2019
    Publication date: July 11, 2019
    Inventor: Bruce Virnelson
  • ACTINIC RADIATION-CURABLE URETHANE/UREA-CONTAINING AEROSPACE COATINGS AND SEALANTS
    Publication number: 20190169465
    Abstract: Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured.
    Type: Application
    Filed: August 8, 2017
    Publication date: June 6, 2019
    Applicant: PRC-DeSoto International, Inc.
    Inventors: Bruce Virnelson, Chandra Rao, Renhe Lin
  • Low density aerospace compositions and sealants
    Patent number: 10280348
    Abstract: Low density aerospace compositions and sealants are disclosed. The low density compositions and sealants are characterized by a high volume percent loading of low density microcapsules.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: May 7, 2019
    Assignee: PRC-DeSoto International, Inc.
    Inventor: Bruce Virnelson
  • Methods for making cured sealants by actinic radiation and related compositions
    Patent number: 10233369
    Abstract: Disclosed are methods for making a cured sealant. The methods include depositing an uncured sealant composition on a substrate and exposing the uncured sealant composition to actinic radiation to provide a cured sealant. The uncured sealant composition includes a thiol-terminated polythioether, a polyene comprising a polyvinyl ether and/or a polyallyl compound, and a hydroxy-functional vinyl ether. Related sealant compositions are also disclosed.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: March 19, 2019
    Assignee: PRC-DeSoto International, Inc.
    Inventors: Raquel Keledjian, Renhe Lin, Chandra Rao, Bruce Virnelson
  • METHODS FOR MAKING CURED SEALANTS BY ACTINIC RADIATION AND RELATED COMPOSITIONS
    Publication number: 20180244966
    Abstract: Disclosed are methods for making a cured sealant. The methods include depositing an uncured sealant composition on a substrate and exposing the uncured sealant composition to actinic radiation to provide a cured sealant. The uncured sealant composition includes a thiol-terminated polythioether, a polyene comprising a polyvinyl ether and/or a polyallyl compound, and a hydroxy-functional vinyl ether. Related sealant compositions are also disclosed.
    Type: Application
    Filed: May 1, 2018
    Publication date: August 30, 2018
    Inventors: RAQUEL KELEDJIAN, RENHE LIN, CHANDRA RAO, BRUCE VIRNELSON