using grinding wires or ropes

Patents Grantslast 30 patents

  • Information Patent Grant

    Rimless spectacle lens bore polishing method and apparatus

    • Patent number 7,726,808
    • Issue date Jun 1, 2010
    • Gentex Optics, Inc.
    • Paresh Kitchloo
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Multistage fine hole machining method and device

    • Patent number 6,817,925
    • Issue date Nov 16, 2004
    • Seiko Instruments Inc.
    • Tatsuji Saigo
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Ceramic parts having small hole(s) and method of manufacturing the...

    • Patent number 5,501,892
    • Issue date Mar 26, 1996
    • NGK Insulators, Ltd.
    • Shinji Ohtsubo
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Method of manufacturing hollow ceramic part with hole therein

    • Patent number 5,476,623
    • Issue date Dec 19, 1995
    • NGK Insulators, Ltd.
    • Shinji Ohtsubo
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    Method and apparatus for surface grinding of small diameter long bo...

    • Patent number 4,831,783
    • Issue date May 23, 1989
    • Gunter Frohn
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    Machining apparatus utilizing oscillation of tuning fork

    • Patent number 4,258,690
    • Issue date Mar 31, 1981
    • Ono; Yoshiro
    • Akira Takahashi
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    3331263

    • Patent number 3,331,263
    • Issue date Jul 18, 1967
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3283392

    • Patent number 3,283,392
    • Issue date Nov 8, 1966
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2616224

    • Patent number 2,616,224
    • Issue date Nov 4, 1952
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2530424

    • Patent number 2,530,424
    • Issue date Nov 21, 1950
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2470331

    • Patent number 2,470,331
    • Issue date May 17, 1949
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2399039

    • Patent number 2,399,039
    • Issue date Apr 23, 1946
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2385287

    • Patent number 2,385,287
    • Issue date Sep 18, 1945
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2385015

    • Patent number 2,385,015
    • Issue date Sep 18, 1945
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2349258

    • Patent number 2,349,258
    • Issue date May 23, 1944
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2325713

    • Patent number 2,325,713
    • Issue date Aug 3, 1943
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2165566

    • Patent number 2,165,566
    • Issue date Jul 11, 1939
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    2135186

    • Patent number 2,135,186
    • Issue date Nov 1, 1938
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1988818

    • Patent number 1,988,818
    • Issue date Jan 22, 1935
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1912016

    • Patent number 1,912,016
    • Issue date May 30, 1933
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1885178

    • Patent number 1,885,178
    • Issue date Nov 1, 1932
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1880729

    • Patent number 1,880,729
    • Issue date Oct 4, 1932
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1826347

    • Patent number 1,826,347
    • Issue date Oct 6, 1931
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1760406

    • Patent number 1,760,406
    • Issue date May 27, 1930
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1759112

    • Patent number 1,759,112
    • Issue date May 20, 1930
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1714869

    • Patent number 1,714,869
    • Issue date May 28, 1929
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1630775

    • Patent number 1,630,775
    • Issue date May 31, 1927
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1496215

    • Patent number 1,496,215
    • Issue date Jun 3, 1924
    • B24 - GRINDING POLISHING
  • Information Patent Grant

    1428209

    • Patent number 1,428,209
    • Issue date Sep 5, 1922
    • B24 - GRINDING POLISHING

Patents Applicationslast 30 patents