P

Inventor

BI CHAO

CN12 patents
⚠️ This page may combine multiple inventors who share the name “BI CHAO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

BI CHAO

3 patents
US8946952B2Feb 3, 2015

Low profile spindle motor

BI CHAO2 citations54
US9202512B2Dec 1, 2015

Data storage device

BI CHAO2 citations52
US8575797B2Nov 5, 2013

Low profile permanent magnet synchronous motor with segment structure

BI CHAO0 citations34

(unassigned)

2 patents
US6879124B1Apr 12, 2005

Method to detect the true zero-crossing points of the phase back EMF for sensorless control of brushless DC motors

34 citations90
US5485071AJan 16, 1996

Method and apparatus for establishing a reference current for use in operating a synchronous motor

8 citations68

MARVELL INT LTD

2 patents
US9197144B2Nov 24, 2015

Method and system for controlling a motor

MARVELL INT LTD8 citations82
US9177595B2Nov 3, 2015

Magnetic disk drive device, magnetic disk assembly and methods of forming the same

MARVELL INT LTD0 citations33

FORTIOR TECH SHENZHEN CO LTD

2 patents
US11448527B2Sep 20, 2022

Magnetic encoder, method, system for detecting absolute electrical angle, and readable storage medium

FORTIOR TECH SHENZHEN CO LTD0 citations47
US11060842B1Jul 13, 2021

Method and system for detecting absolute electrical angle, and computer readable storage medium

FORTIOR TECH SHENZHEN CO LTD0 citations47

FORTIOR TECH (SHEN-ZHEN) CO LTD

1 patent
US9866154B2Jan 9, 2018

Drive system for induction motor

FORTIOR TECH (SHEN-ZHEN) CO LTD2 citations65

JIANG QUAN

1 patent
US8610392B2Dec 17, 2013

Runout measurement for devices having a rotating body

JIANG QUAN0 citations44

ROLLS ROYCE PLC

1 patent
US10338143B2Jul 2, 2019

Method and apparatus for diagnosing a fault condition in an electric machine

ROLLS ROYCE PLC0 citations35