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Konrad Welfonder

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  • Bremerhaven, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Spindle-type holder for a vertical blind vane
    • Patent number 7,500,506
    • Issue date Mar 10, 2009
    • Hunter Douglas Industries BV
    • Jorg Bohlen
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Ratchet-type holder for a vertical blind vane
    • Patent number 7,426,954
    • Issue date Sep 23, 2008
    • Hunter Douglas Industries BV
    • Jorg Bohlen
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Cord tensioner
    • Patent number 7,108,038
    • Issue date Sep 19, 2006
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Rail for a fabric blind and method of attaching rail to a fabric
    • Patent number 6,978,821
    • Issue date Dec 27, 2005
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Winding mechanism
    • Patent number 6,666,252
    • Issue date Dec 23, 2003
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Drive mechanism and head rail for a blind
    • Patent number 6,637,492
    • Issue date Oct 28, 2003
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Releasable end stop
    • Patent number 6,585,025
    • Issue date Jul 1, 2003
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Carrier and spacer assembly
    • Patent number 6,543,517
    • Issue date Apr 8, 2003
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Blind rail
    • Patent number 6,488,071
    • Issue date Dec 3, 2002
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Drive mechanism and head rail for a blind
    • Patent number 6,474,393
    • Issue date Nov 5, 2002
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Method for mounting a fabric
    • Patent number 6,463,990
    • Issue date Oct 15, 2002
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    End cap and mounting support combination
    • Patent number 6,457,688
    • Issue date Oct 1, 2002
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Holder for a depending hollow architectural covering
    • Patent number 6,450,234
    • Issue date Sep 17, 2002
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Winding mechanism
    • Patent number 6,443,210
    • Issue date Sep 3, 2002
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Side guide for a roller covering
    • Patent number 6,412,538
    • Issue date Jul 2, 2002
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Carrier and spacer assembly
    • Patent number 6,394,169
    • Issue date May 28, 2002
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Holder for a depending architectural covering
    • Patent number 6,330,900
    • Issue date Dec 18, 2001
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Corner assembly for a frame
    • Patent number 6,170,555
    • Issue date Jan 9, 2001
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Winding mechanism
    • Patent number 6,158,563
    • Issue date Dec 12, 2000
    • Hunter Douglas International N.V.
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Winding mechanism
    • Patent number 6,155,328
    • Issue date Dec 5, 2000
    • Hunter Douglas International N.V.
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Locking device
    • Patent number 6,131,642
    • Issue date Oct 17, 2000
    • Hunter Douglas International N.V.
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS

Patents Applicationslast 30 patents

  • Information Patent Application

    Spindle-type holder for a vertical blind vane
    • Publication number 20070107855
    • Publication date May 17, 2007
    • Hunter Douglas Industries BV
    • Jorg Bohlen
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Ratchet-type holder for a vertical blind vane
    • Publication number 20060151131
    • Publication date Jul 13, 2006
    • Hunter Douglas Industries BV
    • Jorg Bohlen
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Cord tensioner
    • Publication number 20040159410
    • Publication date Aug 19, 2004
    • Hunter Douglas Industries B.V.
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Rail for a fabric blind and method of attaching rail to a fabric
    • Publication number 20040016519
    • Publication date Jan 29, 2004
    • Hunter Douglas Industries B.V.
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Drive mechanism and head rail for a blind
    • Publication number 20030000654
    • Publication date Jan 2, 2003
    • Hunter Douglas Industries BV
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Winding mechanism
    • Publication number 20020179258
    • Publication date Dec 5, 2002
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Carrier and spacer assembly
    • Publication number 20020084043
    • Publication date Jul 4, 2002
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Side guide for a roller covering
    • Publication number 20020020508
    • Publication date Feb 21, 2002
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Application

    Releasable end stop
    • Publication number 20010011582
    • Publication date Aug 9, 2001
    • Konrad Welfonder
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS