LexDanaLexDanabeta
Inventor

Xinyi Gu

Inventor
Dongying, CN

Overview

3→
Patents
1995–2017
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 3 as inventor

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

E21Bprimary
E21BEarth or rock drilling38%
F04BPositive-displacement machines for liquids25%
Y10TTechnical subjects covered by former us classification25%
F16HGearing13%
PatentTitleYear
9,651,124'Oil pumping unit with pinion reciprocating on rack'20178,047,821'Ring rack oil pumping machine'20115,390,747'Well rig lift system and a hydraulic energy-storing well rig lift system'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995Patents assigned to DRILLING TECHNOLOGY RESEARCH I (1)· patent assignee history
1995–2017Based in Dongying, CN· patent location history
2011Patents assigned to SINOPEC GROUP SHENGLI PETROLEUM ADMINISTRATION TRANSP CORP (1)· patent assignee history
2011Based in Shandong, CN· patent location history
2017Patents assigned to GU XINYI (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
DRILLING TECHNOLOGY RESEARCH I11995
GU XINYIself12017
SINOPEC GROUP SHENGLI PETROLEUM ADMINISTRATION TRANSP CORP12011
Locations
LocationPatentsSpan
Dongying, CN21995–2017
Shandong, CN12011