Patents Assigned to Zwilling J.A. Henckels
  • Patent number: 6612204
    Abstract: A method for manufacturing a blade of a cutting tool, in particular, a knife. In order to create a process with which influence is to be exerted in a targeted manner on the technological material properties of the blade and material chipping to be avoided, as well as permitting economical manufacturing, a process is carried out by treating a blade base material with a laser in a first process step along a curve contour determined by the final edge of the blade and, in a second process step, the edge of the blade is formed, in particular, cut to shape, along the curve contour determined by the final blade form inside the laser-treated area, or the blade base material is machined in a first process step by punching or trimming to form the final edge, subsequently the laser treatment is performed in a second process step on the narrow side forming the final edge and finally, in a third process step, the blade is formed, in particular, ground, inside the laser-treated area.
    Type: Grant
    Filed: July 7, 2000
    Date of Patent: September 2, 2003
    Assignee: Zwilling J.A. Henckels Atiengesellschaft
    Inventors: Joachim Droese, Horst Gräfe
  • Patent number: 5791055
    Abstract: A handle on blades of knives, or the like, with a cross section which is substantially elliptical over its entire length and having the longer axis of the ellipse in the plane of the knife blade. The cross section reduces towards both ends of the handle in such a manner that the two ellipse axes of the ellipse cross sections of the offset end of the handle and of the free end of the handle are shortened by approximately the same amount. In this connection the two more narrowly curved ellipse arcs develop two vertex lines extending in longitudinal direction and lying in the plane of the knife blade.
    Type: Grant
    Filed: March 29, 1996
    Date of Patent: August 11, 1998
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Petra Mangol
  • Patent number: D514379
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: February 7, 2006
    Assignee: Zwilling J. A. Henckels AG
    Inventors: Helen Kerr, Graham Sharples, Crawford Noble, Thang Tran, Johnny Lim
  • Patent number: D524121
    Type: Grant
    Filed: August 3, 2004
    Date of Patent: July 4, 2006
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Viktor Loeb
  • Patent number: D524598
    Type: Grant
    Filed: January 19, 2005
    Date of Patent: July 11, 2006
    Assignee: Zwilling J. A. Henckels AG
    Inventors: Stefan Schorlemmer, Michael Bielitza, Berthold Weitkemper
  • Patent number: D461109
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: August 6, 2002
    Assignee: Zwilling J. A. Henckels AG
    Inventor: Dorian Kurz
  • Patent number: D530453
    Type: Grant
    Filed: July 7, 2005
    Date of Patent: October 17, 2006
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Dieter Thomas
  • Patent number: D470382
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: February 18, 2003
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Dorian Kurz
  • Patent number: D471072
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: March 4, 2003
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Michael Gordner
  • Patent number: D547905
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: July 31, 2007
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Dorian Kurz
  • Patent number: D548543
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: August 14, 2007
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Shinji Izaki
  • Patent number: D474645
    Type: Grant
    Filed: February 25, 2002
    Date of Patent: May 20, 2003
    Assignee: Zwilling J.A. Henckels AG
    Inventors: Ulla Kaufmann, Martin Kaufmann
  • Patent number: D554961
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: November 13, 2007
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Dorian Kurz
  • Patent number: D565359
    Type: Grant
    Filed: September 7, 2006
    Date of Patent: April 1, 2008
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Matteo Thun
  • Patent number: D394593
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: May 26, 1998
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Tokio Komori
  • Patent number: D402523
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: December 15, 1998
    Assignee: Zwilling J.A. Henckels, AG
    Inventor: Dieter Thomas
  • Patent number: D406998
    Type: Grant
    Filed: March 12, 1998
    Date of Patent: March 23, 1999
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Dieter Thomas
  • Patent number: D408218
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: April 20, 1999
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Dieter Thomas
  • Patent number: D417132
    Type: Grant
    Filed: September 3, 1998
    Date of Patent: November 30, 1999
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Michael Schneider
  • Patent number: D432354
    Type: Grant
    Filed: January 14, 2000
    Date of Patent: October 24, 2000
    Assignee: Zwilling J.A. Henckels AG
    Inventor: Wolf Udo Wagner