LexDanaLexDanabeta
Inventor

Zhangcong LIU

Inventor
CN

Overview

1→
Patents
2025
Patent span
Physics
Primary field (CPC G)

Patents· 1 as inventor

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

E21Bprimary
E21BEarth or rock drilling25%
G01DMeasuring not specially adapted for a specific variable25%
G01KMeasuring temperature25%
G01LMeasuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure25%
PatentTitleYear
12,509,985Oil well optical fiber multi-parameter testing method and apparatus2025

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2025Patents assigned to PETROCHINA CO LTD (1)· patent assignee history
2025Based in CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
PETROCHINA CO LTD12025
Locations
LocationPatentsSpan
CN12025