Inventor · disambiguated record
Richard L. Hollowell
Also filed as: HOLLOWELL RICHARD · HOLLOWELL RICHARD L
20 granted patents·4 pending applications·392 citations·filing 1990–2022
95Inventor score
Top patents by PatentIndex Score
24 records- 0193US5294757AActive vibration control system for an elevator, which reduces horizontal and rotational forces acting on the carOTIS ELEVATOR CO·Filed 1991·Granted Mar 15, 1994·54 cites·26 claims
- 0290US6419208B1Elevator sheave for use with flat ropesOTIS ELEVATOR CO·Filed 1999·Granted Jul 16, 2002·47 cites·18 claims
- 0388US5439075AElevator active suspension systemOTIS ELEVATOR CO·Filed 1994·Granted Aug 8, 1995·36 cites·5 claims
- 0486US6193016B1Dual sheave rope climber using flat flexible ropesOTIS ELEVATOR CO·Filed 1998·Granted Feb 27, 2001·39 cites·8 claims
- 0586US5322144AActive control of elevator platformOTIS ELEVATOR CO·Filed 1993·Granted Jun 21, 1994·33 cites·35 claims
- 0683US6742769B2Elevator sheave for use with flat ropesOTIS ELEVATOR CO·Filed 2002·Granted Jun 1, 2004·23 cites·5 claims
- 0783US5321217AApparatus and method for controlling an elevator horizontal suspensionOTIS ELEVATOR CO·Filed 1991·Granted Jun 14, 1994·37 cites·25 claims
- 0878US11970369B2Beam climber battery charging in transfer stationOTIS ELEVATOR CO·Filed 2020·Granted Apr 30, 2024·1 cites·19 claims
- 0978US5308938AElevator active suspension systemOTIS ELEVATOR CO·Filed 1990·Granted May 3, 1994·30 cites·37 claims
- 1077US5931265ARope climbing elevatorOTIS ELEVATOR CO·Filed 1997·Granted Aug 3, 1999·28 cites·12 claims
- 1174US11434107B2Rope-climbing self propelled elevator systemOTIS ELEVATOR CO·Filed 2020·Granted Sep 6, 2022·0 cites·5 claims
- 1273US11738971B2Elevator governor tension frame damperOTIS ELEVATOR CO·Filed 2021·Granted Aug 29, 2023·0 cites·10 claims
- 1373US7878306B2Elevator system without a moving counterweightOTIS ELEVATOR CO·Filed 2007·Granted Feb 1, 2011·8 cites·13 claims
- 1472US5368132ASuspended elevator cab magnetic guidance to railsOTIS ELEVATOR CO·Filed 1993·Granted Nov 29, 1994·25 cites·5 claims
- 1565US10875743B2Rope-climbing self propelled elevator systemOTIS ELEVATOR CO·Filed 2018·Granted Dec 29, 2020·0 cites·14 claims
- 1664US8444515B2Elevator belt assembly with noise and vibration reducing grooveless jacket arrangementBARANDA PEDRO S·Filed 2001·Granted May 21, 2013·5 cites·35 claims
- 1763US11814264B1Yoke assembly for suspending an elevator car or a counterweight in a shaft of an elevatorINVENTIO AG·Filed 2022·Granted Nov 14, 2023·0 cites·15 claims
- 1862US8047335B2Shock absorbing hitchOTIS ELEVATOR CO·Filed 2003·Granted Nov 1, 2011·10 cites·14 claims
- 1959US2013237358A1Elevator belt assembly with noise and vibration reducing grooveless jacket arrangementOTIS ELEVATOR CO·Filed 2013·Application pending·0 cites
- 2056US10399820B2Elevator tension member stiffness estimation and monitoringOTIS ELEVATOR CO·Filed 2014·Granted Sep 3, 2019·1 cites·17 claims
- 2154US2022033215A1Elevator motion control after electrical protective device activationOTIS ELEVATOR CO·Filed 2020·Application pending·0 cites
- 2253US5400872ACounteracting horizontal accelerations on an elevator carOTIS ELEVATOR CO·Filed 1993·Granted Mar 28, 1995·15 cites·21 claims
- 2344US2018327227A1Rope climbing elevator systemOTIS ELEVATOR CO·Filed 2018·Application pending·0 cites
- 2438US2006225965A1Elevator system without a moving counterweightSIEWERT BRYAN R·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →