Patents by Inventor David P. Birkett

David P. Birkett 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: 10662147
    Abstract: Phenylhydrazine/anhydride adducts and anaerobic curable compositions using these adducts are provided. The compositions are particularly useful as adhesives and sealants.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: May 26, 2020
    Assignee: Henkel IP & Holding GmbH
    Inventors: Philip T. Klemarczyk, David P. Birkett
  • Patent number: 10590311
    Abstract: Benzoylthiourea or benzoylthiourethane derivatives as cure accelerators for two part curable compositions are provided.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: March 17, 2020
    Assignees: Henkel IP & Holding GmbH, Henkel AG & Co. KGaA
    Inventors: David P. Birkett, Anthony F. Jacobine, Andrew D. Messana, Joel D. Schall, David Mullen, Martin Wyer, Lynnette Hurlburt
  • Patent number: 9969863
    Abstract: Cure accelerators for anaerobic curable compositions, such as adhesives and sealants, are provided, and which are defined with reference to the aromatic amides shown in structure I where R and R? are each independently C1-10 alkyl, and R? is H or C1-10 alkyl or R and R? together may form a four to seven membered ring fused to the benzene ring, and where R?? is optional, but when R?? is present, R?? is halogen, alkyl, alkenyl, cycloalkyl, hydroxyalkyl, hydroxyalkenyl, alkoxy, amino, alkylene- or alkenylene-ether, alkylene (meth)acrylate, carbonyl, carboxyl, nitroso, sulfonate, hydroxyl or haloalkyl.
    Type: Grant
    Filed: January 27, 2017
    Date of Patent: May 15, 2018
    Assignee: Henkel IP & Holding GmbH
    Inventors: Philip T. Klemarczyk, Jianping Liu, Ory Hajatpour, David P. Birkett
  • Patent number: 9957344
    Abstract: The present invention relates to novolac vinyl esters useful as thermal resistance conferring components for anaerobic curable compositions, and anaerobic curable compositions having such novolac vinyl esters. The compositions are particularly useful as adhesives and sealants.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: May 1, 2018
    Assignee: Henkel IP & Holding GmbH
    Inventors: Ruairi O'Kane, Niamh Bergin, Brendan Kneafsey, David P. Birkett
  • Publication number: 20170226256
    Abstract: The present invention relates to novolac vinyl esters useful as thermal resistance conferring components for anaerobic curable compositions, and anaerobic curable compositions having such novolac vinyl esters. The compositions are particularly useful as adhesives and sealants.
    Type: Application
    Filed: April 24, 2017
    Publication date: August 10, 2017
    Inventors: Ruairi O'Kane, Niamh Bergin, Brendan Kneafsey, David P. Birkett
  • Publication number: 20170217879
    Abstract: Phenylhydrazine/anhydride adducts and anaerobic curable compositions using these adducts are provided. The compositions are particularly useful as adhesives and sealants.
    Type: Application
    Filed: April 12, 2017
    Publication date: August 3, 2017
    Inventors: Philip T. Klemarczyk, David P. Birkett
  • Publication number: 20170137606
    Abstract: Cure accelerators for anaerobic curable compositions, such as adhesives and sealants, are provided, and which are defined with reference to the aromatic amides shown in structure I where R and R? are each independently C1-10 alkyl, and R? is H or C1-10 alkyl or R and R? together may form a four to seven membered ring fused to the benzene ring, and where R?? is optional, but when R?? is present, R?? is halogen, alkyl, alkenyl, cycloalkyl, hydroxyalkyl, hydroxyalkenyl, alkoxy, amino, alkylene- or alkenylene-ether, alkylene (meth)acrylate, carbonyl, carboxyl, nitroso, sulfonate, hydroxyl or haloalkyl.
    Type: Application
    Filed: January 27, 2017
    Publication date: May 18, 2017
    Inventors: Philip T. Klemarczyk, Jianping Liu, Ory Hajatpour, David P. Birkett
  • Patent number: 9580530
    Abstract: The present invention relates to anaerobically curable compositions containing a benzoxazine component and which demonstrates resistance to elevated temperature conditions and/or accelerated cure speed.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: February 28, 2017
    Assignee: Henkel IP & Holding GmbH
    Inventors: Shabbir Attarwala, Qinyan Zhu, David P. Birkett, Martin Wyer, David Mullen, Lee McGarry
  • Patent number: 9371473
    Abstract: Benzoylthiourea or benzoylthiourethane derivatives as cure accelerators in primers for two step adhesive systems are provided.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: June 21, 2016
    Assignees: Henkel IP & Holding GmbH, Henkel AG & Co. KGaA
    Inventors: David P. Birkett, Anthony F. Jacobine, Andrew D. Messana, Joel D. Schall, David Mullen, Martin Wyer, Lynnette Hurlburt, Jiangbo Ouyang, Smita Shah
  • Patent number: 9365750
    Abstract: Benzoylthiourea or benzoylthiourethane derivatives as cure accelerators for curable compositions are provided.
    Type: Grant
    Filed: March 5, 2013
    Date of Patent: June 14, 2016
    Assignee: Henkel IP & Holding GmbH
    Inventors: David P. Birkett, Anthony F. Jacobine, Andrew D. Messana, Joel D. Schall, David Mullen, Martin Wyer, Lynnette Hurlburt
  • Patent number: 8642689
    Abstract: Compositions comprising at least one copper salt, and an aromatic nitroso compound precursor are provided. The copper salt may oxidize the aromatic nitroso compound precursor to provide an aromatic nitroso compound. The compositions may find utility in polymer to metal, in particular, rubber to metal bonding. The aromatic nitroso compound precursor may be a nitrosobenzene/dinitrosobenzene precursor. The nitrosobenzene or dinitrosobenzene precursor may be at least one of a quinone oxime or a quinone dioxime.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: February 4, 2014
    Assignee: Henkel IP & Holding GmbH
    Inventors: Nigel Fay, Brendan J. Kneafsey, Darren Nolan, David P. Birkett, Susan Warren
  • Publication number: 20140004354
    Abstract: Benzoylthiourea or benzoylthiourethane derivatives as cure accelerators for two part curable compositions are provided.
    Type: Application
    Filed: March 5, 2013
    Publication date: January 2, 2014
    Applicants: Henkel Ireland Limited, Henkel Corporation
    Inventors: David P. Birkett, Anthony F. Jacobine, Andrew D. Messana, Joel D. Schall, David Mullen, Martin Wyer, Lynnette Hurlburt
  • Publication number: 20140004353
    Abstract: Benzoylthiourea or benzoylthiourethane derivatives as cure accelerators for curable compositions are provided.
    Type: Application
    Filed: March 5, 2013
    Publication date: January 2, 2014
    Applicants: Henkel Ireland Limited, Henkel Corporation
    Inventors: David P. Birkett, Anthony F. Jacobine, Andrew D. Messana, Joel D. Schall, David Mullen, Martin Wyer, Lynnette Hurlburt
  • Publication number: 20140000807
    Abstract: Benzoylthiourea or benzoylthiourethane derivatives as cure accelerators in primers for two step adhesive systems are provided.
    Type: Application
    Filed: March 5, 2013
    Publication date: January 2, 2014
    Applicants: Henkel Ireland Limited, Henkel Corporation
    Inventors: David P. Birkett, Anthony F. Jacobine, Andrew D. Messana, Joel D. Schall, David Mullen, Martin Wyer, Lynnette Hurlburt, Jiangbo Ouyang, Smita Shah
  • Patent number: 8481659
    Abstract: The present invention relates to cure accelerators useful for anaerobic curable compositions, such as adhesives and sealants.
    Type: Grant
    Filed: October 7, 2011
    Date of Patent: July 9, 2013
    Assignees: Henkel Corporation, Henkel Ireland Ltd.
    Inventors: David P. Birkett, Martin Wyer, Andrew Messana, Philip Klemarczyk, Anthony F. Jacobine
  • Patent number: 8362112
    Abstract: The present invention relates to cure accelerators useful for anaerobic curable compositions, such as adhesives and sealants. The cure accelerators are constructed as urethane/urea/thiourethane (meth)acrylate resins from diols and include a unit embraced within structure A where X is C1-20 alkyl, C2-20 alkenyl, or C7-20 alkaryl, any of which may be interrupted by one or more hereto atoms, and which are functionalized by at least one and preferably at least two groups selected from —OH, —NH2 or —SH and z is 1-3.
    Type: Grant
    Filed: October 28, 2011
    Date of Patent: January 29, 2013
    Assignees: Henkel Ireland Limited, Henkel Corporation
    Inventors: David P. Birkett, Martin Wyer, Andrew Messana, David P. Dworak, Anthony F. Jacobine
  • Publication number: 20120231286
    Abstract: The present invention relates to anaerobically curable compositions containing a benzoxazine component and which demonstrates resistance to elevated temperature conditions and/or accelerated cure speed.
    Type: Application
    Filed: March 30, 2012
    Publication date: September 13, 2012
    Applicants: Loctite (R&D) Limited, Henkel Corporation
    Inventors: Shabbir Attarwala, Qinyan Zhu, David P. Birkett, Martin Wyer, David Mullen, Lee McGarry
  • Publication number: 20120003501
    Abstract: Compositions comprising at least one copper salt, and an aromatic nitroso compound precursor are provided. The copper salt may oxidise the aromatic nitroso compound precursor to provide an aromatic nitroso compound. The compositions may find utility in polymer to metal, in particular, rubber to metal bonding. The aromatic nitroso compound precursor may be a nitrosobenzene/dinitrosobenzene precursor. The nitrosobenzene or dinitrosobenzene precursor may be at least one of a quinone oxime or a quinone dioxime.
    Type: Application
    Filed: September 16, 2011
    Publication date: January 5, 2012
    Applicant: Loctite (R&D) Limited
    Inventors: Nigel Fay, Brendan J. Kneafsey, Darren Nolan, David P. Birkett, Susan Warren
  • Patent number: 7951884
    Abstract: The present invention relates to anaerobic cure systems containing enamines, their use as cure accelerators for anaerobic adhesive compositions, and anaerobic adhesive compositions including such enamine cure accelerators.
    Type: Grant
    Filed: March 31, 2009
    Date of Patent: May 31, 2011
    Assignee: Loctite (R&D) Limited
    Inventors: David P. Birkett, Martin Wyer
  • Publication number: 20100152407
    Abstract: Ketimines, enamines and oxazolidines are moisture labile functional groups that in the presence of water undergo hydrolysis to yield free amines. Within the art such latent amines have found utility in curable compositions where it is desirable to initiate cure in the presence moisture. A number of novel polyketimines, polyenamines, polymeric oxazolidines and oxazolidines are disclosed. In particular, polymeric compounds of the above classes derived from C6 cyclic diketones and polyamines are reported. Suitable C6 cyclic diketones include cyclohexanediones and quinones. The invention further relates to the applications of the materials, such as in moisture cure adhesives.
    Type: Application
    Filed: November 19, 2009
    Publication date: June 17, 2010
    Applicant: Loctite (R&D) Limited
    Inventors: David P. Birkett, Matthias Voegler, Louise Gallagher