Assignee
OKUMA MACHINERY WORKS LTD
JP·440 granted patents·78 pending applications·5,729 citations·filing 1975–2025
Top patents by PatentIndex Score
518 records- 0198US5359872AMethod and apparatus for sheet-metal processingOKUMA MACHINERY WORKS LTD·Filed 1992·Granted Nov 1, 1994·161 cites·7 claims
- 0296US10882151B2Automatic pallet changer in machine toolOKUMA MACHINERY WORKS LTD·Filed 2020·Granted Jan 5, 2021·3 cites·1 claims
- 0396US4433261ARotor for permanent magnet type synchronous motorsOKUMA MACHINERY WORKS LTD·Filed 1983·Granted Feb 21, 1984·193 cites·5 claims
- 0495US7049924B2Electromagnetic induction type position sensorOKUMA MACHINERY WORKS LTD·Filed 2005·Granted May 23, 2006·42 cites·4 claims
- 0594US5469215AMethod and apparatus for controlling an electric motor with compensation or torque rippleOKUMA MACHINERY WORKS LTD·Filed 1994·Granted Nov 21, 1995·117 cites·8 claims
- 0694US5088055ACoordinate measuring apparatus having a stylus friction compensating meansOKUMA MACHINERY WORKS LTD·Filed 1990·Granted Feb 11, 1992·195 cites·6 claims
- 0793US6285104B1Motor with reduced torque rippleOKUMA MACHINERY WORKS LTD·Filed 1999·Granted Sep 4, 2001·89 cites·6 claims
- 0893US6121706AReluctance motorOKUMA MACHINERY WORKS LTD·Filed 1999·Granted Sep 19, 2000·103 cites·9 claims
- 0992US10603752B2Machine toolOKUMA MACHINERY WORKS LTD·Filed 2017·Granted Mar 31, 2020·6 cites·8 claims
- 1092US10594242B2Motor controllerOKUMA MACHINERY WORKS LTD·Filed 2019·Granted Mar 17, 2020·4 cites·6 claims
- 1192US9839982B2Main spindle load monitoring device for machine toolOKUMA MACHINERY WORKS LTD·Filed 2016·Granted Dec 12, 2017·6 cites·4 claims
- 1292US7154198B2Linear motorOKUMA MACHINERY WORKS LTD·Filed 2005·Granted Dec 26, 2006·24 cites·4 claims
- 1392US6211593B1Synchronous motor with permanent magnet provided on magnetic pole endOKUMA MACHINERY WORKS LTD·Filed 1999·Granted Apr 3, 2001·81 cites·9 claims
- 1491US11954566B2Data collection system for machine learning and a method for collecting dataOKUMA MACHINERY WORKS LTD·Filed 2020·Granted Apr 9, 2024·3 cites·5 claims
- 1591US11338407B2Error measurement method for machine tool and machine toolOKUMA MACHINERY WORKS LTD·Filed 2020·Granted May 24, 2022·2 cites·9 claims
- 1691US11243062B2Position measurement method and position measurement system of object in machine tool, and computer-readable recording mediumOKUMA MACHINERY WORKS LTD·Filed 2020·Granted Feb 8, 2022·4 cites·9 claims
- 1791US7229395B2Cover structure of a machine toolOKUMA MACHINERY WORKS LTD·Filed 2006·Granted Jun 12, 2007·13 cites·2 claims
- 1890US10889012B2Machine toolOKUMA MACHINERY WORKS LTD·Filed 2017·Granted Jan 12, 2021·4 cites·6 claims
- 1990US7621031B2Pallet exchanging deviceOKUMA MACHINERY WORKS LTD·Filed 2007·Granted Nov 24, 2009·25 cites·2 claims
- 2090US5903080AReluctance type synchronous motorOKUMA MACHINERY WORKS LTD·Filed 1997·Granted May 11, 1999·86 cites·11 claims
- 2190US5618221AMethod of dressing grindstone for NC grinderOKUMA MACHINERY WORKS LTD·Filed 1995·Granted Apr 8, 1997·101 cites·6 claims
- 2289US10632611B2Machine toolOKUMA MACHINERY WORKS LTD·Filed 2018·Granted Apr 28, 2020·3 cites·9 claims
- 2389US7561927B2Numerical controller which can call program described in script languageOKUMA MACHINERY WORKS LTD·Filed 2005·Granted Jul 14, 2009·66 cites·11 claims
- 2489US5345133AElectric motorOKUMA MACHINERY WORKS LTD·Filed 1993·Granted Sep 6, 1994·86 cites·3 claims
- 2588US10307877B2Machine toolOKUMA MACHINERY WORKS LTD·Filed 2017·Granted Jun 4, 2019·8 cites·10 claims
- 2687US11662195B2Correction value measurement method and correction value measurement system of position measurement sensor in machine toolOKUMA MACHINERY WORKS LTD·Filed 2020·Granted May 30, 2023·2 cites·5 claims
- 2787US10357863B2Error identification method of machine tool and error identification system of the sameOKUMA MACHINERY WORKS LTD·Filed 2017·Granted Jul 23, 2019·6 cites·14 claims
- 2887US6266572B1Apparatus for generating a numerical control command according to cut resistance value and cut torque value of machining simulationOKUMA MACHINERY WORKS LTD·Filed 1996·Granted Jul 24, 2001·101 cites·23 claims
- 2987US4255682AMultipolar resolverOKUMA MACHINERY WORKS LTD·Filed 1979·Granted Mar 10, 1981·38 cites·6 claims
- 3086US11579198B2Inverter system with motor insulaton inspection functionOKUMA MACHINERY WORKS LTD·Filed 2021·Granted Feb 14, 2023·1 cites·3 claims
- 3186US11190122B2Motor driving apparatusOKUMA MACHINERY WORKS LTD·Filed 2019·Granted Nov 30, 2021·2 cites·2 claims
- 3286US10784803B2Position control deviceOKUMA MACHINERY WORKS LTD·Filed 2019·Granted Sep 22, 2020·2 cites·2 claims
- 3386US8014903B2Method for suppressing vibration and device thereforOKUMA MACHINERY WORKS LTD·Filed 2008·Granted Sep 6, 2011·12 cites·6 claims
- 3486US7266903B2Method for correcting thermal displacement in a machine toolOKUMA MACHINERY WORKS LTD·Filed 2006·Granted Sep 11, 2007·20 cites·14 claims
- 3586US6681495B2Measuring apparatus and method for correcting errors in a machineOKUMA MACHINERY WORKS LTD·Filed 2000·Granted Jan 27, 2004·61 cites·3 claims
- 3686US6105951AWork positioning jigs for machine toolsOKUMA MACHINERY WORKS LTD·Filed 1999·Granted Aug 22, 2000·43 cites·3 claims
- 3786US5801478AReluctance type synchronous motorOKUMA MACHINERY WORKS LTD·Filed 1995·Granted Sep 1, 1998·62 cites·7 claims
- 3886US5315526ANumerically controlled latheOKUMA MACHINERY WORKS LTD·Filed 1991·Granted May 24, 1994·47 cites·4 claims
- 3985US11988506B2Error identification method for machine tool, non-transitory computer-readable storage medium, and machine toolOKUMA MACHINERY WORKS LTD·Filed 2022·Granted May 21, 2024·1 cites·13 claims
- 4085US10737333B2Machine toolOKUMA MACHINERY WORKS LTD·Filed 2019·Granted Aug 11, 2020·2 cites·5 claims
- 4185US9983563B2Method and apparatus for controlling a machine toolOKUMA MACHINERY WORKS LTD·Filed 2015·Granted May 29, 2018·4 cites·14 claims
- 4285US6252325B1Switched reluctance motorOKUMA MACHINERY WORKS LTD·Filed 1999·Granted Jun 26, 2001·52 cites·3 claims
- 4385US5260568AAbsolute position detector with diffraction grating windows and spot position detectionOKUMA MACHINERY WORKS LTD·Filed 1993·Granted Nov 9, 1993·50 cites·2 claims
- 4485US5019763ALearning control method in numerical control machine toolOKUMA MACHINERY WORKS LTD·Filed 1989·Granted May 28, 1991·54 cites·18 claims
- 4585US4080853ANumerically controlled latheOKUMA MACHINERY WORKS LTD·Filed 1976·Granted Mar 28, 1978·28 cites·6 claims
- 4684US9952582B2Method of controlling feed axes in machine tool, and machine tool performing machining by using the method of controlling feed axesOKUMA MACHINERY WORKS LTD·Filed 2015·Granted Apr 24, 2018·2 cites·4 claims
- 4784US7750592B2Axis-of-rotation position control deviceOKUMA MACHINERY WORKS LTD·Filed 2008·Granted Jul 6, 2010·14 cites·4 claims
- 4884US7273335B2Machine toolOKUMA MACHINERY WORKS LTD·Filed 2005·Granted Sep 25, 2007·19 cites·12 claims
- 4984US6144132APermanent magnet motorOKUMA MACHINERY WORKS LTD·Filed 1999·Granted Nov 7, 2000·56 cites·12 claims
- 5084US4214191ASystem for automatic management of tool lifeOKUMA MACHINERY WORKS LTD·Filed 1977·Granted Jul 22, 1980·39 cites·4 claims
Showing the top 50 of 518 patent records by PatentIndex Score.
Join the waitlist — get patent alerts
Get an alert when OKUMA MACHINERY WORKS LTD files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →