Individual holder
PERKINSON ROBERT H
US·17 granted patents·1 pending application·127 citations·filing 2006–2012
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
18 records- 0188US8162611B2Controllable pitch propeller with electrical power generationPERKINSON ROBERT H·Filed 2009·Granted Apr 24, 2012·21 cites·19 claims
- 0287US8167553B2Electrical system for driving a propeller pitch change mechanismPERKINSON ROBERT H·Filed 2009·Granted May 1, 2012·21 cites·20 claims
- 0383US8790087B2Interlocking blade sheathPERKINSON ROBERT H·Filed 2011·Granted Jul 29, 2014·5 cites·17 claims
- 0482US8740565B2Modular counter rotating propeller systemPERKINSON ROBERT H·Filed 2011·Granted Jun 3, 2014·9 cites·17 claims
- 0580US8167501B2Separator for bearing assemblies with cyclic loadsPERKINSON ROBERT H·Filed 2009·Granted May 1, 2012·9 cites·13 claims
- 0677US8757972B2De-icing system for modular counter rotating propellerPERKINSON ROBERT H·Filed 2011·Granted Jun 24, 2014·7 cites·18 claims
- 0777US8529205B2Passive cyclic pitch controlPERKINSON ROBERT H·Filed 2009·Granted Sep 10, 2013·12 cites·17 claims
- 0874US8545178B2Controlled propeller pitch lock actuation systemPERKINSON ROBERT H·Filed 2006·Granted Oct 1, 2013·12 cites·17 claims
- 0970US8172530B2Pitch change actuation system for a counter-rotating propellerPERKINSON ROBERT H·Filed 2009·Granted May 8, 2012·9 cites·20 claims
- 1068US8277182B2Remote pitch controller for a variable pitch propellerPERKINSON ROBERT H·Filed 2009·Granted Oct 2, 2012·11 cites·23 claims
- 1163US8784055B2Propeller pitchlock un-locking devicePERKINSON ROBERT H·Filed 2010·Granted Jul 22, 2014·3 cites·11 claims
- 1260US8770934B2Teeter mechanism for a multiple-bladed wind turbinePERKINSON ROBERT H·Filed 2009·Granted Jul 8, 2014·4 cites·22 claims
- 1355US8182222B2Thermal protection of rotor bladesPERKINSON ROBERT H·Filed 2009·Granted May 22, 2012·2 cites·20 claims
- 1452US9028222B2Variable output pumpPERKINSON ROBERT H·Filed 2011·Granted May 12, 2015·0 cites·16 claims
- 1552US8496436B2Torque compensation for propeller pitch change mechanismPERKINSON ROBERT H·Filed 2010·Granted Jul 30, 2013·1 cites·11 claims
- 1650US8894418B2Retractable contact assemblyPERKINSON ROBERT H·Filed 2012·Granted Nov 25, 2014·1 cites·19 claims
- 1748US8535007B2Hydraulic actuator locking devicePERKINSON ROBERT H·Filed 2010·Granted Sep 17, 2013·0 cites·16 claims
- 1846US2012183399A1Method and apparatus for balancing wind turbinesPERKINSON ROBERT H·Filed 2011·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when PERKINSON ROBERT H 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 →