Inventor
LIU XILIN
CN12 patents
⚠️ This page may combine multiple inventors who share the name “LIU XILIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAT OILWELL VARCO LP
6 patentsUS9163462B2Oct 20, 2015
Bi-directionally raisable drilling rig mast
NAT OILWELL VARCO LP22 citations91
US8904716B2Dec 9, 2014
Bi-directionally raisable drilling rig mast
NAT OILWELL VARCO LP29 citations91
US8863449B2Oct 21, 2014
Substructure of a mobile drilling rig with a movable center floor section
NAT OILWELL VARCO LP19 citations91
US11952844B2Apr 9, 2024
Tubular string building system and method
NAT OILWELL VARCO LP2 citations72
US12473783B2Nov 18, 2025
Tubular string building system and method
NAT OILWELL VARCO LP0 citations61
US9488013B2Nov 8, 2016
Bi-directionally raisable drilling rig mast
NAT OILWELL VARCO LP1 citations61
QUALCOMM INC
3 patentsUS10516412B1Dec 24, 2019
Image calibration for time-interleaved digital-to-analog converter
QUALCOMM INC19 citations83
US11184018B1Nov 23, 2021
Mismatch and timing correction technique for mixing-mode digital-to-analog converter (DAC)
QUALCOMM INC6 citations82
US11705921B2Jul 18, 2023
Adaptive switch biasing scheme for digital-to-analog converter (DAC) performance enhancement
QUALCOMM INC2 citations72