Razor blade sharpeners

Patents Grantslast 30 patents

  • Information Patent Grant

    Device for treating blades to improve their cutting properties

    • Patent number 8,627,747
    • Issue date Jan 14, 2014
    • Celso E. Martell
    • B24 - GRINDING POLISHING
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    Device for treating blades to improve their cutting properties

    • Patent number 8,074,535
    • Issue date Dec 13, 2011
    • Celso E. Martell
    • B24 - GRINDING POLISHING
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    Magnetic blade sharpening device and method

    • Patent number 7,275,461
    • Issue date Oct 2, 2007
    • Richard Joel Gherman
    • B24 - GRINDING POLISHING
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    Amorphous diamond coating of blades

    • Patent number 6,289,593
    • Issue date Sep 18, 2001
    • Thomas G. Decker
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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    Stropping device of blade for safety razors

    • Patent number 6,062,970
    • Issue date May 16, 2000
    • Sung-Ho Back
    • B24 - GRINDING POLISHING
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    Amorphous diamond coating of blades

    • Patent number 5,992,268
    • Issue date Nov 30, 1999
    • Thomas G. Decker
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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    Amorphous diamond coating of blades

    • Patent number 5,940,975
    • Issue date Aug 24, 1999
    • Thomas G. Decker
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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    Amorphous diamond coating of blades

    • Patent number 5,799,549
    • Issue date Sep 1, 1998
    • The Gillette Company
    • Thomas G. Decker
    • C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
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    Razor sharpening device

    • Patent number 5,036,731
    • Issue date Aug 6, 1991
    • Charles J. Fletcher
    • B24 - GRINDING POLISHING
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    Process and apparatus for providing cutting edges

    • Patent number 4,807,401
    • Issue date Feb 28, 1989
    • The Gillette Company
    • Robert M. Atwater
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Knife blade sharpener

    • Patent number 4,512,111
    • Issue date Apr 23, 1985
    • Don A. Childers
    • B24 - GRINDING POLISHING
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    Hone for rotary electric razor cutters

    • Patent number 4,060,941
    • Issue date Dec 6, 1977
    • Arvid S. Wahlstrom
    • B24 - GRINDING POLISHING
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    3854251

    • Patent number 3,854,251
    • Issue date Dec 17, 1974
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2658695

    • Patent number 2,658,695
    • Issue date Nov 10, 1953
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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    2138520

    • Patent number 2,138,520
    • Issue date Nov 29, 1938
    • B24 - GRINDING POLISHING
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    1939483

    • Patent number 1,939,483
    • Issue date Dec 12, 1933
    • B24 - GRINDING POLISHING
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    1832539

    • Patent number 1,832,539
    • Issue date Nov 17, 1931
    • B24 - GRINDING POLISHING
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    1832155

    • Patent number 1,832,155
    • Issue date Nov 17, 1931
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
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    1806437

    • Patent number 1,806,437
    • Issue date May 19, 1931
    • B24 - GRINDING POLISHING
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    1798882

    • Patent number 1,798,882
    • Issue date Mar 31, 1931
    • B24 - GRINDING POLISHING
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    1796263

    • Patent number 1,796,263
    • Issue date Mar 10, 1931
    • B24 - GRINDING POLISHING
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    1784625

    • Patent number 1,784,625
    • Issue date Dec 9, 1930
    • B24 - GRINDING POLISHING
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    1776642

    • Patent number 1,776,642
    • Issue date Sep 23, 1930
    • B24 - GRINDING POLISHING
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    1746063

    • Patent number 1,746,063
    • Issue date Feb 4, 1930
    • B26 - HAND CUTTING TOOLS CUTTING SEVERING
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    1730163

    • Patent number 1,730,163
    • Issue date Oct 1, 1929
    • B24 - GRINDING POLISHING
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    1698559

    • Patent number 1,698,559
    • Issue date Jan 8, 1929
    • B24 - GRINDING POLISHING
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    1694389

    • Patent number 1,694,389
    • Issue date Dec 11, 1928
    • B24 - GRINDING POLISHING
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    1646415

    • Patent number 1,646,415
    • Issue date Oct 25, 1927
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1630551

    • Patent number 1,630,551
    • Issue date May 31, 1927
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1629980

    • Patent number 1,629,980
    • Issue date May 24, 1927
    • B24 - GRINDING POLISHING

Patents Applicationslast 30 patents