Patents by Inventor David Birkett

David 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).

  • Publication number: 20230272186
    Abstract: The present invention relates to cure accelerators useful for anaerobic curable compositions, such as adhesives and sealants. The cure accelerators may be embraced generally within the structure below where X is CH2, O, S, NR?, CR?R?? or C?O; R is hydrogen or (meth)acryl; R6 is hydrogen, halogen, amino, carboxyl, nitro, alkyl, alkenyl, alkynyl, hydroxyalkyl, hydroxyalkenyl, hydroxyalkynyl, or alkaryl; and A and A1 are each individually selected from hydrogen or taken together create a ring structure of 5 to 12 total ring atoms, wherein the ring structure may be cycloaliphatic, cycloheteroaliphatic or aromatic or combinations thereof with or without substitution by one or more hydroxyl or (meth)acryl groups; and n is 0 or 1, provided that when R is hydrogen, A and A? cannot both be hydrogen or taken together cannot be naphthyl.
    Type: Application
    Filed: February 21, 2023
    Publication date: August 31, 2023
    Inventors: Brian Deegan, Brendan Kneafsey, Nigel Sweeney, Patrick O'Dwyer, Stephen Fearon, Gavin Haberlin, David Birkett, David Condron, Marc Hamm, Vincent O'Brien
  • Patent number: 11274190
    Abstract: The present invention relates to cure accelerators useful for anaerobic curable compositions, such as adhesives and sealants. The cure accelerators are embraced within where X is CH2, O, S, NR4, CR5R6 or C?O, wherein R4, R5, and R6 are each individually selected from hydrogen, halogen, amino, carboxyl, nitro, alkyl, alkenyl, alkynyl, hydroxyalkyl, hydroxyalkenyl, hydroxyalkynyl, or alkaryl; R is one or more of hydrogen, alkyl, alkenyl, alkynl, hydroxyalkyl, hydroxyalkenyl, or hydroxyalkynl; R1, R2, and R3 are each individually selected from hydrogen, halogen, amino, carboxyl, nitro, alkyl, alkenyl, alkynyl, hydroxyalkyl, hydroxyalkenyl, hydroxyalkynyl, or alkaryl; R7 is hydrogen or CHR8R9, where R8 and R9 are each individually selected from hydrogen, halogen, amino, carboxyl, nitro, alkyl, alkenyl, alkynyl, hydroxyalkyl, hydroxyalkenyl, hydroxyalkynyl, or alkaryl; and n is 0 or 1. A particularly desirable example is 1,2,3,4-tetrahydrobenzo-h-quinolin-3-ol.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: March 15, 2022
    Assignee: Henkel AG & Co. KGaA
    Inventors: David Birkett, Pat O'Dwyer, David Condron, Hilary Mongey
  • Publication number: 20210139623
    Abstract: The present invention relates to anaerobically curable compositions made from renewable materials. In particular, an alpha-methylene-lactone is used with a (meth)acrylate component and a cure system to form an anaerobically curable composition.
    Type: Application
    Filed: January 20, 2021
    Publication date: May 13, 2021
    Inventors: Adrian Brandt, Horst Beck, Andreas Taden, Ralph Nemitz, Alexander Kux, Nigel Sweeney, David Birkett, Brendan Kneafsey, James Anthony Houlihan, Michael Doherty
  • Publication number: 20200299485
    Abstract: The present invention relates to cure accelerators useful for anaerobic curable compositions, such as adhesives and sealants. The cure accelerators are embraced within where X is CH2, O, S, NR4, CR5R6 or C?O; R is one or more of hydrogen, alkyl, alkenyl, alkynl, hydroxyalkyl, hydroxyalkenyl, or hydroxyalkynl; R1-R6 are each individually selected from hydrogen, halogen, amino, carboxyl, nitro, alkyl, alkenyl, alkynyl, hydroxyalkyl, hydroxyalkenyl, hydroxyalkynyl, or alkaryl; R7 is hydrogen or CHR8R9, where R8 and R9 are each individually selected from hydrogen, halogen, amino, carboxyl, nitro, alkyl, alkenyl, alkynyl, hydroxyalkyl, hydroxyalkenyl, hydroxyalkynyl, or alkaryl; and n is 0 or 1. A particularly desirable example is 1,2,3,4-tetrahydrobenzo-h-quinolin-3-ol.
    Type: Application
    Filed: April 9, 2020
    Publication date: September 24, 2020
    Inventors: David Birkett, Pat O'Dwyer, David Condron, Hilary Mongey
  • Patent number: 10336915
    Abstract: The present invention relates to anaerobically curable (meth)acrylate compositions, and stabilizers for same.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: July 2, 2019
    Assignee: Henkel IP & Holding GmbH
    Inventors: David Birkett, David Mullen, Ronan Crowley
  • Publication number: 20180072918
    Abstract: The present invention relates to anaerobically curable (meth)acrylate compositions, and stabilizers for same.
    Type: Application
    Filed: November 15, 2017
    Publication date: March 15, 2018
    Inventors: David Birkett, David Mullen, Ronan Crowley
  • Patent number: 8524034
    Abstract: Provided is a complex of hydrogen peroxide and at least one compound represented by Formula I: wherein X is: —C(R3)3, —C?C(R3), —O(R3), —N(R3)2, or —S(R3); and R1, R2, and R3 are each independently selected from H, alkyl, alkenyl, alkynyl, aralkyl, aryl, heteroaryl heteroarylalkyl, heterocyclyl, and cycloalkyl, or R2 and an R3 are optionally taken together to form an alicyclic ring. Also provided are anaerobic cure systems and curable compositions employing the complexes described herein.
    Type: Grant
    Filed: July 7, 2011
    Date of Patent: September 3, 2013
    Assignees: Henkel Corporation, Henkel Ireland Limited
    Inventors: Philip T. Klemarczyk, David Birkett, David Farrell, Peter Wrobel, Ciaran McArdle, Greg Clarke
  • Publication number: 20120157641
    Abstract: The present invention relates to cure accelerators useful for anaerobic curable compositions, such as adhesives and sealants.
    Type: Application
    Filed: October 7, 2011
    Publication date: June 21, 2012
    Applicants: Loctite (R&D) Limited, Henkel Corporation
    Inventors: David Birkett, Martin Wyer, Andrew Messana, Philip Klemarczyk, Anthony F. Jacobine
  • Publication number: 20120129994
    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: Application
    Filed: October 28, 2011
    Publication date: May 24, 2012
    Applicants: Henkel Corporation, Loctite (R&D) Limited
    Inventors: David Birkett, Martin Wyer, Andrew Messana, David P. Dworak, Anthony F. Jacobine
  • Publication number: 20110290418
    Abstract: Provided is a complex of hydrogen peroxide and at least one compound represented by Formula I: wherein X is: —C(R3)3, —C?C(R3), —O(R3), —N(R3)2, or —S(R3); and R1, R2, and R3 are each independently selected from H, alkyl, alkenyl, alkynyl, aralkyl, aryl, heteroaryl heteroarylalkyl, heterocyclyl, and cycloalkyl, or R2 and an R3 are optionally taken together to form an alicyclic ring. Also provided are anaerobic cure systems and curable compositions employing the complexes described herein.
    Type: Application
    Filed: July 7, 2011
    Publication date: December 1, 2011
    Applicants: Loctite ( R&D) Limited, Henkel Corporation
    Inventors: Philip T. Klemarczyk, David Birkett, David Farrell, Peter Wrobel, Ciaran McArdle, Greg Clarke