Rack for machine roomless elevator system, elevator lifting drive and elevator system
US-2026048965-A1 · Feb 19, 2026 · US
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Gao Guochen patents
Gao Guochen is listed as an inventor on 15 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Gao Guochen |
| Total patents | 15 |
| First publication | Oct 19, 2017 |
| Latest publication | Feb 19, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Elevator system, permanent magnet motor therefor, and manufacturing method for permanent magnet motor
US-2025379480-A1 · Dec 11, 2025 · US
Elevator sheave liner, elevator sheave assembly, and elevator system
US-2025346456-A1 · Nov 13, 2025 · US
Elevator braking device and elevator system
US-2025206567-A1 · Jun 26, 2025 · US
Method for online replacement and method for installation of elevator sheave liner, and elevator sheave liner
US-2025011132-A1 · Jan 9, 2025 · US
Elevator braking device and elevator system
US-2024067498-A1 · Feb 29, 2024 · US
Friction material and preparation method therefor, and friction part
US-11885387-B2 · Jan 30, 2024 · US
Traction machine assembly and elevator
US-11702321-B2 · Jul 18, 2023 · US
Friction material and preparation method therefor, and friction part
US-2023134070-A1 · May 4, 2023 · US
Electromagnetic device for elevator brake, elevator brake and elevator system
US-2023022165-A1 · Jan 26, 2023 · US
Recent patents
Latest publications not already listed above.
Brake device for elevator and an elevator system
US-10975927-B2 · Apr 13, 2021 · US
Brake device for elevator and an elevator system
US-2020056666-A1 · Feb 20, 2020 · US
Traction machine assembly and elevator
US-2019210841-A1 · Jul 11, 2019 · US
Brake for elevator and a replacement method of damper of the brake for elevator
US-10288135-B2 · May 14, 2019 · US
Brake for elevator and a replacement method of damper of the brake for elevator
US-2017299003-A1 · Oct 19, 2017 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Otis Elevator Co | 15 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| B66D5/30 | 7 |
| B66D5/14 | 6 |
| F16D2121/22 | 5 |
| B66B11/08 | 4 |
| B66B11/04 | 4 |