Inventor · disambiguated record
Donald L. Ekhoff
Also filed as: EKHOFF DONALD L
19 granted patents·3 pending applications·474 citations·filing 1985–2017
95Inventor score
Files withEKHOFF DONALD L19
Top patents by PatentIndex Score
22 records- 0195US6781684B1Workpiece levitation using alternating positive and negative pressure flowsFiled 2000·Granted Aug 24, 2004·109 cites·20 claims
- 0293US10293443B1Precision pneumatic drilling spindle and methodEKHOFF DONALD L·Filed 2017·Granted May 21, 2019·9 cites·18 claims
- 0393US5056082AApparatus for clamping removable disksEKHOFF DONALD L·Filed 1989·Granted Oct 8, 1991·54 cites·23 claims
- 0492US6097568AAir dams positioned between spinning disks for reducing the vibration in a data storage deviceFiled 1998·Granted Aug 1, 2000·76 cites·18 claims
- 0590US5048005ASpindle clamp having a unitary lock memberEKHOFF DONALD L·Filed 1989·Granted Sep 10, 1991·45 cites·20 claims
- 0688US4755981ASpindle clamp for removable disksEKHOFF DONALD L·Filed 1987·Granted Jul 5, 1988·54 cites·10 claims
- 0785US8553518B1Disc spindle with internal particulate removalEKHOFF DONALD L·Filed 2012·Granted Oct 8, 2013·7 cites·16 claims
- 0879US4736475AAbrading machine for disk shaped surfacesEKHOFF DONALD L·Filed 1987·Granted Apr 12, 1988·26 cites·19 claims
- 0973US5018029AShock start for memory disk motor drivesEKHOFF DONALD L·Filed 1989·Granted May 21, 1991·18 cites·7 claims
- 1072US4862302AAir bladder apparatus for positioning a magnetic headEKHOFF DONALD L·Filed 1988·Granted Aug 29, 1989·18 cites·18 claims
- 1169US8074239B2Axial force spindle clampEKHOFF DONALD L·Filed 2009·Granted Dec 6, 2011·1 cites·18 claims
- 1268US4671018ARigid disk finishing apparatusEKHOFF DONALD L·Filed 1985·Granted Jun 9, 1987·18 cites·24 claims
- 1365US4941293AFlexible rocking mount with forward pivot for polishing padEKHOFF DONALD L·Filed 1989·Granted Jul 17, 1990·20 cites·10 claims
- 1459US9156139B1Disc spindle with flexible cap clampingEKHOFF DONALD L·Filed 2012·Granted Oct 13, 2015·1 cites·19 claims
- 1555US2010108054A1Optically efficient and thermally protected solar heating apparatus and methodEKHOFF DONALD L·Filed 2008·Application pending·0 cites
- 1646US5920443ADisk drive assembly and method having direct aerodynamic disk supportFiled 1997·Granted Jul 6, 1999·7 cites·20 claims
- 1743US2013107396A1Vacuum clearing of spindle particulatesEKHOFF DONALD L·Filed 2012·Application pending·0 cites
- 1843US2011045718A1Marine propulsion system and methodEKHOFF DONALD L·Filed 2009·Application pending·0 cites
- 1941US9884671B2Marine propulsion system and methodEKHOFF DONALD L·Filed 2012·Granted Feb 6, 2018·0 cites·20 claims
- 2037US4891722AIncremental stepping assembly for a rotary actuatorEKHOFF DONALD L·Filed 1988·Granted Jan 2, 1990·3 cites·17 claims
- 2135US5148982AAdjustable slit nozzleEKHOFF DONALD L·Filed 1991·Granted Sep 22, 1992·8 cites·17 claims
- 2230US5327312ARotary actuator having cantilevered rotational axisEKHOFF DONALD L·Filed 1993·Granted Jul 5, 1994·0 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →