Elevator safety control device, method for elevator safety control and elevator system
US-2026015205-A1 · Jan 15, 2026 · US
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Wang Longwen patents
Wang Longwen is listed as an inventor on 20 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Wang Longwen |
| Total patents | 20 |
| First publication | Oct 26, 2017 |
| Latest publication | Jan 15, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Device for testing function of contactors and apparatus for performing elevator function
US-2024230760-A1 · Jul 11, 2024 · US
Waterproof cover
US-10772226-B2 · Sep 8, 2020 · US
Monitoring system of a passenger conveyor, a passenger conveyor, and a monitoring method thereof
US-10479653-B2 · Nov 19, 2019 · US
Waterproof cover
US-2019307006-A1 · Oct 3, 2019 · US
Passenger conveyor system and starting/stopping control method thereof
US-10399824-B2 · Sep 3, 2019 · US
Escalator braking system and escalator braking control method
US-10294081-B2 · May 21, 2019 · US
Monitoring system of a passenger conveyor and monitoring method thereof
US-10282847-B2 · May 7, 2019 · US
System and method for monitoring handrail entrance of passenger conveyor
US-10214391-B2 · Feb 26, 2019 · US
Monitoring of step rollers and maintenance mechanics of passenger conveyors
US-10183843-B2 · Jan 22, 2019 · US
Recent patents
Latest publications not already listed above.
Detection of state of engagement between step and comb plate of passenger conveyor
US-10071884-B2 · Sep 11, 2018 · US
Monitoring system of a passenger conveyor, a passenger conveyor, and a monitoring method thereof
US-10059569-B2 · Aug 28, 2018 · US
Passenger conveyor system and starting/stopping control method thereof
US-2018194597-A1 · Jul 12, 2018 · US
Monitoring system of a passenger conveyor, a passenger conveyor, and a monitoring method thereof
US-2018029838-A1 · Feb 1, 2018 · US
Monitoring system of a passenger conveyor, a passenger conveyor, and a monitoring method thereof
US-2018029835-A1 · Feb 1, 2018 · US
Monitoring of step rollers and maintenance mechanics of passenger conveyors
US-2018029834-A1 · Feb 1, 2018 · US
Monitoring system of a passenger conveyor and monitoring method thereof
US-2018029842-A1 · Feb 1, 2018 · US
Detection of state of engagement between step and comb plate of passenger conveyor
US-2018029841-A1 · Feb 1, 2018 · US
System and method for monitoring handrail entrance of passenger conveyor
US-2018029840-A1 · Feb 1, 2018 · US
Escalator braking system and escalator braking control method
US-2017305723-A1 · Oct 26, 2017 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Otis Elevator Co | 20 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| B66B21/02 | 14 |
| B66B25/003 | 14 |
| B66B29/005 | 12 |
| B66B25/006 | 10 |
| B66B29/00 | 8 |