P

Inventor

YU QINGFENG

CN13 patents
⚠️ This page may combine multiple inventors who share the name “YU QINGFENG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

YU QINGFENG

5 patents
USD924980SJul 13, 2021

Unicorn shaped game board

YU QINGFENG53 citations97
USD948630SApr 12, 2022

Toy

YU QINGFENG23 citations93
USD944332SFeb 22, 2022

Toy

YU QINGFENG36 citations93
USD924336SJul 6, 2021

Game board

YU QINGFENG45 citations93
US8572233B2Oct 29, 2013

Method and system for site path evaluation using web session clustering

YU QINGFENG2 citations54

AMAZON TECH INC

4 patents
US9626577B1Apr 18, 2017

Image selection and recognition processing from a video feed

AMAZON TECH INC32 citations94
US9576210B1Feb 21, 2017

Sharpness-based frame selection for OCR

AMAZON TECH INC26 citations94
US9367736B1Jun 14, 2016

Text detection using features associated with neighboring glyph pairs

AMAZON TECH INC21 citations90
US9418316B1Aug 16, 2016

Sharpness-based frame selection for OCR

AMAZON TECH INC15 citations84

YANTAI JEREH OILFIELD SERVICES GROUP CO LTD

1 patent
US9617808B2Apr 11, 2017

Continuous oil pipe clamp mechanism

YANTAI JEREH OILFIELD SERVICES GROUP CO LTD161 citations96

LIU DONG

1 patent
US9493997B2Nov 15, 2016

Floating clamping device for injection head of continuous oil pipe

LIU DONG161 citations96

LAKSHMINARAYAN CHOUDUR K

1 patent
US8396737B2Mar 12, 2013

Website analysis combining quantitative and qualitative data

LAKSHMINARAYAN CHOUDUR K16 citations76

YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD

1 patent
US11850618B2Dec 26, 2023

Nozzle assembly, ejecting device and ejecting method

YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD0 citations41