Patents by Inventor Abraham Leibson

Abraham Leibson 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: 8430720
    Abstract: A knife edge enhancing apparatus includes a support having a support surface and knife blade clamping structure mounted to the support and located above the support surface. An object having a knife edge modifying surface which could be abrasive or non-abrasive is mounted to a holder which is freely slidable on the support surface so that the object surface can be manually moved into contact with a knife edge facet. At least one of the clamping structure and the object surface is angularly adjustable to control the angle of contact of the object surface with the knife edge facet.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: April 30, 2013
    Assignee: Edgecraft Corporation
    Inventors: Daniel D. Friel, Sr., Daniel D. Friel, Jr., Abraham Leibson, Angela Bigliano
  • Patent number: 7287445
    Abstract: An apparatus for manually steeling or conditioning the edge of a knife blade comprises a precision angle guide attached to a manual sharpening steel. The angle guide establishes a guiding surface that provides for sustained sliding or rolling contact with the face of the knife blade such that the plane of at least one edge facet adjacent to the edge of the blade is maintained at a precisely established angle relative to the plane of the sharpening steel surface at the contact point of the facet with the surface of the sharpening steel.
    Type: Grant
    Filed: May 6, 2005
    Date of Patent: October 30, 2007
    Assignee: Edgecraft Corporation
    Inventors: Daniel D. Friel, Sr., Daniel D. Friel, Jr., Robert P. Bigliano, Abraham Leibson
  • Publication number: 20050250428
    Abstract: An apparatus for manually steeling or conditioning the edge of a knife blade comprises a precision angle guide attached to a manual sharpening steel. The angle guide establishes a guiding surface that provides for sustained sliding or rolling contact with the face of the knife blade such that the plane of at least one edge facet adjacent to the edge of the blade is maintained at a precisely established angle relative to the plane of the sharpening steel surface at the contact point of the facet with the surface of the sharpening steel.
    Type: Application
    Filed: May 6, 2005
    Publication date: November 10, 2005
    Inventors: Daniel Friel, Daniel Friel, Robert Bigliano, Abraham Leibson
  • Patent number: 4733787
    Abstract: There is disclosed an overcap for a container with a primary cap for the removal of the contents thereof, whereby the overcap is easily assembled onto the container and completely surrounds the primary cap. When assembled, the overcap prevents access to the primary cap, and when removed, the overcap becomes irreversibly deformed such that visual evidence is clearly apparent that access to the primary cap has been gained. The irreversible deformity consists of tabs connecting the pull-tab to the overcap, and weakened areas in the side of the overcap which must be torn to allow removal of the primary cap.
    Type: Grant
    Filed: June 2, 1986
    Date of Patent: March 29, 1988
    Assignee: Merck & Co., Inc.
    Inventors: Norman D. Knopf, Heinz P. Meyer, Abraham Leibson
  • Patent number: D443959
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: June 19, 2001
    Assignee: H-Tech, Inc.
    Inventor: Abraham Leibson
  • Patent number: D519815
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: May 2, 2006
    Assignee: Edgecraft Corporation
    Inventors: Daniel D. Friel, Sr., Abraham Leibson
  • Patent number: D530143
    Type: Grant
    Filed: March 10, 2005
    Date of Patent: October 17, 2006
    Assignee: Edgecraft Corporation
    Inventors: Abraham Leibson, Daniel D. Friel, Sr., Terry Hall, Daniel D. Friel, Jr.
  • Patent number: D567611
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: April 29, 2008
    Assignee: Edgecraft Corporation
    Inventors: Bela Elek, Daniel D. Friel, Jr., Abraham Leibson
  • Patent number: D587551
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: March 3, 2009
    Assignee: Edgecraft Corporation
    Inventors: Daniel D. Friel, Sr., Abraham Leibson, Daniel D. Friel, Jr., Bela Elek
  • Patent number: D588395
    Type: Grant
    Filed: May 2, 2008
    Date of Patent: March 17, 2009
    Assignee: Edgecraft Corporation
    Inventors: Daniel D. Friel, Jr., Abraham Leibson, Terry Hall
  • Patent number: D312307
    Type: Grant
    Filed: January 23, 1987
    Date of Patent: November 20, 1990
    Assignee: North American Drager
    Inventors: Abraham Leibson, Joachim Schreiber
  • Patent number: D599161
    Type: Grant
    Filed: December 5, 2008
    Date of Patent: September 1, 2009
    Assignee: Edgecraft Corporation
    Inventors: Daniel D. Friel, Sr., Daniel D. Friel, Jr., James Fitzgerald, Abraham Leibson, Bela Elek, Brian Brant
  • Patent number: D349699
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: August 16, 1994
    Assignee: Bogen Communications, Inc.
    Inventors: Ronen Sacher, Tamir T. Friedrich, Abraham Leibson
  • Patent number: D381409
    Type: Grant
    Filed: June 14, 1995
    Date of Patent: July 22, 1997
    Assignee: Warner-Lambert Company
    Inventors: Gene Fleischer, Abraham Leibson
  • Patent number: D409891
    Type: Grant
    Filed: January 9, 1998
    Date of Patent: May 18, 1999
    Assignee: Edgecraft Corporation
    Inventors: Daniel D. Friel, Daniel D. Friel, Jr., Abraham Leibson
  • Patent number: D425911
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: May 30, 2000
    Assignee: H-Tech, Inc.
    Inventors: Gene S. Fleischer, Fred T. Hazlehurst, Abraham Leibson
  • Patent number: RE43884
    Abstract: An apparatus for manually steeling or conditioning the edge of a knife blade comprises a precision angle guide attached to a manual sharpening steel. The angle guide establishes a guiding surface that provides for sustained sliding or rolling contact with the face of the knife blade such that the plane of at least one edge facet adjacent to the edge of the blade is maintained at a precisely established angle relative to the plane of the sharpening steel surface at the contact point of the facet with the surface of the sharpening steel.
    Type: Grant
    Filed: July 1, 2011
    Date of Patent: January 1, 2013
    Assignee: Edgecraft Corporation
    Inventors: Daniel D. Friel, Sr., Daniel D. Friel, Jr., Robert P. Bigliano, Abraham Leibson
  • Patent number: D688545
    Type: Grant
    Filed: March 7, 2012
    Date of Patent: August 27, 2013
    Assignee: Edgecraft Corporation
    Inventors: George C. Jensen, Abraham Leibson, Daniel D. Friel, Sr., Daniel D. Friel, Jr.
  • Patent number: D699534
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: February 18, 2014
    Assignee: Edgecraft Corporation
    Inventors: Bela Elek, Daniel D. Friel, Sr., Abraham Leibson
  • Patent number: D736029
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: August 11, 2015
    Assignee: EDGECRAFT CORPORATION
    Inventors: Thomas Michael Huber, Daniel D. Friel, Jr., Abraham Leibson, Samuel Weiner, Bernard Endres