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Inventor

Wenzhong Wei

Inventor
Qingdao, CN

Overview

1→
Patents
2017
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 1 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

E21Bprimary
E21BEarth or rock drilling100%
PatentTitleYear
9,540,881'Method and system for improving drilling speed by using drill speed vibration'2017

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2017Patents assigned to GUAN BEN (1)· patent assignee history
2017Patents assigned to GUAN ZHICHUAN (1)· patent assignee history
2017Patents assigned to LIU YONGWANG (1)· patent assignee history
2017Patents assigned to SHI YUCAI (1)· patent assignee history
2017Patents assigned to UNIV CHINA PETROLEUM EAST CHINA (1)· patent assignee history
2017Based in Qingdao, CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
GUAN BEN12017
GUAN ZHICHUAN12017
LIU YONGWANG12017
SHI YUCAI12017
UNIV CHINA PETROLEUM EAST CHINA12017
Locations
LocationPatentsSpan
Qingdao, CN12017