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Michael Derham

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  • Cambridge, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Door lock assembly
    • Patent number 11,459,794
    • Issue date Oct 4, 2022
    • Mighton Products Limited
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Sash window restrictor
    • Patent number 11,136,797
    • Issue date Oct 5, 2021
    • Mighton Products Limited
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Sash window restrictor
    • Patent number 9,816,300
    • Issue date Nov 14, 2017
    • Mighton Products Limited
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Winder assembly
    • Patent number 9,309,711
    • Issue date Apr 12, 2016
    • Mighton Products Limited
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Sash window restrictor
    • Patent number 8,881,461
    • Issue date Nov 11, 2014
    • Mighton Products Limited
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Window restrictor
    • Patent number 8,726,572
    • Issue date May 20, 2014
    • Mighton Products Limited
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Spring balance adjustment
    • Patent number 7,093,392
    • Issue date Aug 22, 2006
    • Mighton Products, Limited
    • Mike Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Patents Applicationslast 30 patents

  • Information Patent Application

    DOOR LOCK ASSEMBLY
    • Publication number 20240141694
    • Publication date May 2, 2024
    • MIGHTON PRODUCTS LIMITED
    • Michael DERHAM
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    CASEMENT WINDOW LOCKING BAR SENSOR
    • Publication number 20220341229
    • Publication date Oct 27, 2022
    • MIGHTON PRODUCTS LIMITED
    • Michael DERHAM
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    SASH WINDOW RESTRICTOR
    • Publication number 20210404228
    • Publication date Dec 30, 2021
    • MIGHTON PRODUCTS LIMITED
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    DOOR LOCK ASSEMBLY
    • Publication number 20200354991
    • Publication date Nov 12, 2020
    • MIGHTON PRODUCTS LIMITED
    • Michael DERHAM
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    SASH WINDOW RESTRICTOR
    • Publication number 20170362862
    • Publication date Dec 21, 2017
    • MIGHTON PRODUCTS LIMITED
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    SASH WINDOW RESTRICTOR
    • Publication number 20150015000
    • Publication date Jan 15, 2015
    • Michael DERHAM
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    WINDER ASSEMBLY
    • Publication number 20140026709
    • Publication date Jan 30, 2014
    • MIGHTON PRODUCTS LIMITED
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    WINDOW RESTRICTOR
    • Publication number 20130082469
    • Publication date Apr 4, 2013
    • MIGHTON PRODUCTS LIMITED
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    SASH WINDOW RESTRICTOR
    • Publication number 20110113695
    • Publication date May 19, 2011
    • Mighton Products Limited
    • Michael Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Application

    Spring balance adjustment
    • Publication number 20060112642
    • Publication date Jun 1, 2006
    • Mike Derham
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES