Assignee
HITACHI SEIKI KK
JP·21 granted patents·647 citations·filing 1976–2000
Top patents by PatentIndex Score
21 records- 0194US5127140ANumerically-controlled lathe, numerically-controlled device therefor and processing procedure therebyHITACHI SEIKI KK·Filed 1990·Granted Jul 7, 1992·129 cites·2 claims
- 0293US6224462B1Grinding machineHITACHI SEIKI KK·Filed 2000·Granted May 1, 2001·69 cites·22 claims
- 0392US6454636B1Method and apparatus for supplying coolant in a grinding machineHITACHI SEIKI KK·Filed 2000·Granted Sep 24, 2002·59 cites·12 claims
- 0480US6021695ALathe and a machining system of a latheHITACHI SEIKI KK·Filed 1997·Granted Feb 8, 2000·32 cites·3 claims
- 0575US4117586AMachine tool with automatic tool changerHITACHI SEIKI KK·Filed 1976·Granted Oct 3, 1978·27 cites·4 claims
- 0672US6463835B1Method and apparatus for controlling motor-driven chucking deviceHITACHI SEIKI KK·Filed 1999·Granted Oct 15, 2002·41 cites·20 claims
- 0771US5125142ATurret headHITACHI SEIKI KK·Filed 1989·Granted Jun 30, 1992·24 cites·1 claims
- 0867US5109973AFree flowing production systemHITACHI SEIKI KK·Filed 1990·Granted May 5, 1992·20 cites·7 claims
- 0963US4982970AClaw unit with paired separably connected claw elementsHITACHI SEIKI KK·Filed 1988·Granted Jan 8, 1991·23 cites·1 claims
- 1062US6189427B1Lathe and a machining system of a latheHITACHI SEIKI KK·Filed 1999·Granted Feb 20, 2001·20 cites·5 claims
- 1158US5623857AMethod and apparatus for compensating for thermal distortion for a machine toolHITACHI SEIKI KK·Filed 1995·Granted Apr 29, 1997·39 cites·26 claims
- 1257US4821402ANC lathe with robot for automatically exchanging work and chuck clawHITACHI SEIKI KK·Filed 1985·Granted Apr 18, 1989·17 cites·7 claims
- 1354US6055892AWork feeder for a vertical machine tool with movable spindleHITACHI SEIKI KK·Filed 1998·Granted May 2, 2000·21 cites·19 claims
- 1452US6139028AElectric chuck for machine tool and method of opening or closing gripping pawl of sameHITACHI SEIKI KK·Filed 1998·Granted Oct 31, 2000·17 cites·9 claims
- 1552US5877959ANumerical-control systemHITACHI SEIKI KK·Filed 1996·Granted Mar 2, 1999·24 cites·2 claims
- 1651US4788636AInteractive device for entering graphic dataHITACHI SEIKI KK·Filed 1986·Granted Nov 29, 1988·28 cites·1 claims
- 1750US6257108B1Work transfer method and apparatus in machine tool with movable spindle and machining systemHITACHI SEIKI KK·Filed 1999·Granted Jul 10, 2001·18 cites·28 claims
- 1850US6082016ACutting edge measuring device for machine toolHITACHI SEIKI KK·Filed 1998·Granted Jul 4, 2000·11 cites·10 claims
- 1948US4755949AApparatus for setting work coordinate system of machineHITACHI SEIKI KK·Filed 1986·Granted Jul 5, 1988·16 cites·1 claims
- 2031US6276245B1Bar work loading apparatus for head traveling type vertical machine tool and bar work loading method for use in head traveling type vertical machine toolHITACHI SEIKI KK·Filed 1999·Granted Aug 21, 2001·7 cites·17 claims
- 2119US4672551ADie machining apparatus in automatic programmingHITACHI SEIKI KK·Filed 1985·Granted Jun 9, 1987·5 cites·1 claims
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