QC

Qianyan Cheng

📍 Sacramento, CA: #156 of 1,687 inventorsTop 10%
🗺 California: #73,997 of 386,348 inventorsTop 20%
Overall (All Time): #618,942 of 4,157,543Top 15%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
11591835 Narrow backset auto-latching mortise lock for sliding door 2023-02-28
11408198 Electrified mortise lock for sliding door 2022-08-09
11377874 Auto-latching/locking mortise lock for sliding door 2022-07-05
11306510 Cylinder assembly with rotating winged latch bolt for sliding door lockset 2022-04-19
11047151 Surface mounted barn door privacy lock 2021-06-29
10422164 Lock body with adjustable strike plate for sliding doors 2019-09-24
10081966 Barn door with privacy lock 2018-09-25
10066420 Easily-assembled modular door lock 2018-09-04