Assignee
OTIS ELEVATOR CO
US2,367 patents
Top patents by PatentIndex Score
US8011479B2Sep 6, 2011
Electrical signal application strategies for monitoring a condition of an elevator load bearing member
OTIS ELEVATOR CO48 citations98
US6707374B1Mar 16, 2004
Elevator access security
OTIS ELEVATOR CO124 citations98
US6435315B1Aug 20, 2002
Absolute position reference system for an elevator
OTIS ELEVATOR CO119 citations98
US6193019B1Feb 27, 2001
Device for localization of a door breakdown
OTIS ELEVATOR CO87 citations98
US5952626ASep 14, 1999
Individual elevator call changing
OTIS ELEVATOR CO107 citations98
US5617023AApr 1, 1997
Industrial contactless position sensor
OTIS ELEVATOR CO147 citations98
USD830406SOct 9, 2018
Display screen or portion thereof with transitional graphical user interface
OTIS ELEVATOR CO82 citations97
USD817351SMay 8, 2018
Display screen or portion thereof with graphical user interface
OTIS ELEVATOR CO75 citations97
USD817339SMay 8, 2018
Display screen or portion thereof with graphical user interface
OTIS ELEVATOR CO68 citations97
US6739433B1May 25, 2004
Tension member for an elevator
OTIS ELEVATOR CO73 citations97
US6295799B1Oct 2, 2001
Tension member for an elevator
OTIS ELEVATOR CO114 citations97
US6209685B1Apr 3, 2001
Selective, automatic elevator call registering system
OTIS ELEVATOR CO87 citations97
US6173814B1Jan 16, 2001
Electronic safety system for elevators having a dual redundant safety bus
OTIS ELEVATOR CO235 citations97
US6123176ASep 26, 2000
Rope tension monitoring assembly and method
OTIS ELEVATOR CO127 citations97
US5984051ANov 16, 1999
Remote elevator call requests with descriptor tags
OTIS ELEVATOR CO158 citations97
US5551532ASep 3, 1996
Method for transmitting messages in an elevator communications system
OTIS ELEVATOR CO121 citations97
US5070290ADec 3, 1991
Alternating current motor control system with emergency control responsive to failure of power supply
OTIS ELEVATOR CO127 citations97
US8020672B2Sep 20, 2011
Video aided system for elevator control
OTIS ELEVATOR CO102 citations96
US7575099B2Aug 18, 2009
Remotely resettable ropeless emergency stopping device for an elevator
OTIS ELEVATOR CO60 citations96
US7328775B2Feb 12, 2008
Destination entry system with delayed elevator car assignment
OTIS ELEVATOR CO62 citations96
US6952068B2Oct 4, 2005
Fabricated components of transverse flux electric motors
OTIS ELEVATOR CO59 citations96
US6467585B1Oct 22, 2002
Wireless safety chain for elevator system
OTIS ELEVATOR CO85 citations96
US6446759B1Sep 10, 2002
Door coupler and latch system for elevator car and landing doors
OTIS ELEVATOR CO61 citations96
US6401871B2Jun 11, 2002
Tension member for an elevator
OTIS ELEVATOR CO61 citations96
US6386324B1May 14, 2002
Elevator traction sheave
OTIS ELEVATOR CO63 citations96
US6364061B2Apr 2, 2002
Tension member for an elevator
OTIS ELEVATOR CO57 citations96
US6223861B1May 1, 2001
Elevator hoistway access safety
OTIS ELEVATOR CO80 citations96
US6164053ADec 26, 2000
Synthetic non-metallic rope for an elevator
OTIS ELEVATOR CO45 citations96
US6073728AJun 13, 2000
Method and apparatus to inspect hoisting ropes
OTIS ELEVATOR CO51 citations96
US5929400AJul 27, 1999
Self commissioning controller for field-oriented elevator motor/drive system
OTIS ELEVATOR CO155 citations96
US5890564AApr 6, 1999
Apparatus to inspect hoisting ropes
OTIS ELEVATOR CO45 citations96
US5881843AMar 16, 1999
Synthetic non-metallic rope for an elevator
OTIS ELEVATOR CO66 citations96
US5788018AAug 4, 1998
Traction elevators with adjustable traction sheave loading, with or without counterweights
OTIS ELEVATOR CO111 citations96
US5712456AJan 27, 1998
Flywheel energy storage for operating elevators
OTIS ELEVATOR CO73 citations96
US5682024AOct 28, 1997
Elevator position determination
OTIS ELEVATOR CO59 citations96
US5490577AFeb 13, 1996
Flexible elevator hitch
OTIS ELEVATOR CO51 citations96
US5294757AMar 15, 1994
Active vibration control system for an elevator, which reduces horizontal and rotational forces acting on the car
OTIS ELEVATOR CO54 citations96
US5274203ADec 28, 1993
"Smart" position transducer system for elevators
OTIS ELEVATOR CO86 citations96
US5035302AJul 30, 1991
"Artificial Intelligence" based learning system predicting "Peak-Period" times for elevator dispatching
OTIS ELEVATOR CO103 citations96
US5024295AJun 18, 1991
Relative system response elevator dispatcher system using artificial intelligence to vary bonuses and penalties
OTIS ELEVATOR CO66 citations96
US4838384AJun 13, 1989
Queue based elevator dispatching system using peak period traffic prediction
OTIS ELEVATOR CO107 citations96
US4338376AJul 6, 1982
High fluorocarbon content coating composition, method of application, and coated article
OTIS ELEVATOR CO58 citations96
US7353915B2Apr 8, 2008
Automatic destination entry system with override capability
OTIS ELEVATOR CO104 citations95
US6633159B1Oct 14, 2003
Method and apparatus for magnetic detection of degradation of jacketed elevator rope
OTIS ELEVATOR CO58 citations95
US6446762B1Sep 10, 2002
Elevator machine support frame mounted to hoistway wall
OTIS ELEVATOR CO61 citations95
US6351096B1Feb 26, 2002
Operation control apparatus for escalator
OTIS ELEVATOR CO63 citations95
US6269910B1Aug 7, 2001
Elevator rescue system
OTIS ELEVATOR CO46 citations95
US6267219B1Jul 31, 2001
Electronic safety system for escalators
OTIS ELEVATOR CO94 citations95
US6196355B1Mar 6, 2001
Elevator rescue system
OTIS ELEVATOR CO69 citations95
US6193026B1Feb 27, 2001
Elevator brake
OTIS ELEVATOR CO78 citations95
Showing the top 50 of 2,367 patents by PatentIndex Score.