Case hardening

Patents Grantslast 30 patents

  • Information Patent Grant

    Method for improving the endurance of a blade base of a disc chippe...

    • Patent number 5,765,452
    • Issue date Jun 16, 1998
    • Sunds Defibrator Woodhandling Oy
    • Paul Roux
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    Method for manufacture of plasma ion nitrided stainless steel plates

    • Patent number 5,306,531
    • Issue date Apr 26, 1994
    • Formica Technology, Inc.
    • Kenneth J. Laurence
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Method of making shock-resistant and wear-resistant tools of compos...

    • Patent number 5,265,500
    • Issue date Nov 30, 1993
    • Dalex, Inc.
    • Fred G. Gunzner
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Bandsaw blade and method of manufacturing same

    • Patent number 5,249,485
    • Issue date Oct 5, 1993
    • Sandvik AB
    • Robert C. Hayden
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Plasma ion nitrided stainless steel press plates and applications f...

    • Patent number 5,244,375
    • Issue date Sep 14, 1993
    • Formica Technology, Inc.
    • Kenneth J. Laurence
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Cutting tool

    • Patent number 5,171,109
    • Issue date Dec 15, 1992
    • Mitsubishi Materials Corporation
    • Tatsuo Arai
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Case hardened roller cutter for a rotary drill bit and method of ma...

    • Patent number 4,969,378
    • Issue date Nov 13, 1990
    • Reed Tool Company
    • Mou-Chih Lu
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    Rock drilling bit and a method of producing the same

    • Patent number 4,867,015
    • Issue date Sep 19, 1989
    • Sandvik Rock Tools, Inc.
    • Robert F. Kane
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Cutting and scoring strip

    • Patent number 4,829,854
    • Issue date May 16, 1989
    • Essmann & Schaefer GmbH & Co. KG
    • Horst-Peter Kammerling-Essmann
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    Hardening of selected areas of an earth boring rockbit

    • Patent number 4,660,444
    • Issue date Apr 28, 1987
    • Dresser Industries, Inc.
    • Robert K. Sorensen
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    Rotary cutting tool of cemented carbide

    • Patent number 4,642,003
    • Issue date Feb 10, 1987
    • Mitsubishi Kinzoku Kabushiki Kaisha
    • Hironori Yoshimura
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Coated steel product and process of producing the same

    • Patent number 3,988,955
    • Issue date Nov 2, 1976
    • Niels N. Engel
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    3003370

    • Patent number 3,003,370
    • Issue date Oct 10, 1961
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    2340706

    • Patent number 2,340,706
    • Issue date Feb 1, 1944
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1895439

    • Patent number 1,895,439
    • Issue date Jan 31, 1933
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    1887504

    • Patent number 1,887,504
    • Issue date Nov 15, 1932
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    1839023

    • Patent number 1,839,023
    • Issue date Dec 29, 1931
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
  • Information Patent Grant

    1803276

    • Patent number 1,803,276
    • Issue date Apr 28, 1931
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    1792505

    • Patent number 1,792,505
    • Issue date Feb 17, 1931
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    1772866

    • Patent number 1,772,866
    • Issue date Aug 12, 1930
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    1748378

    • Patent number 1,748,378
    • Issue date Feb 25, 1930
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    1736920

    • Patent number 1,736,920
    • Issue date Nov 26, 1929
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    1716191

    • Patent number 1,716,191
    • Issue date Jun 4, 1929
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    1711835

    • Patent number 1,711,835
    • Issue date May 7, 1929
    • C21 - METALLURGY OF IRON
  • Information Patent Grant

    1699273

    • Patent number 1,699,273
    • Issue date Jan 15, 1929
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    1697083

    • Patent number 1,697,083
    • Issue date Jan 1, 1929
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    1590034

    • Patent number 1,590,034
    • Issue date Jun 22, 1926
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    1567632

    • Patent number 1,567,632
    • Issue date Dec 29, 1925
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    1487554

    • Patent number 1,487,554
    • Issue date Mar 18, 1924
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
  • Information Patent Grant

    1402449

    • Patent number 1,402,449
    • Issue date Jan 3, 1922
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...