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Inventor

Steven P. Randall

Inventor
Leeds, GB

Overview

28→
Patents
1996–2020
Patent span
Electricity
Primary field (CPC H)

Patents· 28 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H02Kprimary
H02KDynamo-electric machines31%
H02PControl or regulation of electric motors, electric generators or dynamo-electric converters21%
A62BDevices, apparatus or methods for life-saving6%
B66FHoisting, lifting, hauling or pushing, not otherwise provided for, e.g. devices which apply a lifting or pushing force directly to the surface of a load6%
G01DMeasuring not specially adapted for a specific variable4%
G01PMeasuring linear or angular speed, acceleration, deceleration, or shock4%
H01PWaveguides4%
H03HImpedance networks, e.g. resonant circuits4%
A45DHairdressing or shaving equipment2%
B60KArrangement or mounting of propulsion units or of transmissions in vehicles2%
PatentTitleYear
10,633,235Lifting system including rotating attachment link202010,604,392Lever adapter for use with jack and lifting devices202010,196,250Bi-pod rescue strut system20199,917,486'Electric motor assemblies including stator and/or rotor cooling'20189,819,233'Internal rotor sensor having adjustable sensor carrier'20179,812,750'High frequency band pass filter with coupled surface mount transition'20179,490,768'High frequency band pass filter with coupled surface mount transition'20169,312,801'Control of a brushless electrical machine'20168,963,384'Electric motor assemblies including stator and/or rotor cooling'20158,916,997'Electric motor assemblies including stator and/or rotor cooling'20147,906,931'Control of a switched reluctance machine'20117,804,269'Control of an electrical machine'20107,151,359'Variable reluctance generator'20067,014,586'Electro-mechanical transmission systems'20067,012,350'Segmented stator switched reluctance machine'20066,897,591'Sensorless switched reluctance electric machine with segmented stator'20056,809,441'Cooling of electrical machines'20046,700,284'Fan assembly including a segmented stator switched reluctance fan motor'20046,584,813'Washing machine including a segmented stator switched reluctance motor'20036,476,531'Winding for switched reluctance machines'20026,072,260'Noise reduction in reluctance machines'20005,877,568'Rotor position sensing system'19995,814,965'Reduced noise controller for a switched reluctance machine'19985,811,954'Reduced noise controller for a switched reluctance machine using active noise cancellation'19985,760,565'Method and apparatus for reducing iron losses in a switched reluctance machine'19985,726,516'Rotor for high speed switched reluctance machine'19985,637,972'Rotor position encoder having features in decodeable angular positions'19975,539,293'Rotor position encoder having features in decodable angular positions'1996

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1996–2011Patents assigned to SWITCHED RELUCTANCE DRIVES LTD (12)· patent assignee history
1996–2018Based in Leeds, GB· patent location history
1999–2006Patents assigned to EMERSON ELECTRIC CO (5)· patent assignee history
2004–2015Based in Adel, GB· patent location history
2014–2018Patents assigned to NIDEC MOTOR CORP (4)· patent assignee history
2014–2015Patents assigned to KIRKLEY JR THOMAS E (2)· patent assignee history
2016–2017Based in Manlius, NY, US· patent location history
2017Based in West Yorkshire, GB· patent location history
2019–2020Patents assigned to RED RESCUE LLC (3)· patent assignee history
2019–2020Based in Renton, WA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SWITCHED RELUCTANCE DRIVES LTD121996–2011
EMERSON ELECTRIC CO51999–2006
NIDEC MOTOR CORP42014–2018
RED RESCUE LLC32019–2020
KIRKLEY JR THOMAS E22014–2015
Locations
LocationPatentsSpan
Leeds, GB171996–2018
Adel, GB42004–2015
Renton, Washington, US32019–2020
Manlius, New York, US22016–2017
West Yorkshire, GB12017