LexDanaLexDanabeta
Inventor

Yanniu REN

Inventor
CN

Overview

4→
Patents
2023–2024
Patent span
Fixed constructions
Primary field (CPC E)

Patents· 4 as inventor

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

E21Bprimary
E21BEarth or rock drilling80%
Y02PClimate change mitigation technologies in the production or processing of goods20%
PatentTitleYear
12,180,808All-metal intelligent control motor202411,927,077High-frequency composite impactor202411,834,928Drill string rotation controller for directional drilling202311,828,149Fracking tool with electromagnetic intelligent control sliding sleeve2023

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2023–2024Patents assigned to SICHUAN XIEMING TECH CO LTD (4)· patent assignee history
2023–2024Patents assigned to UNIV SOUTHWEST PETROLEUM (4)· patent assignee history
2023–2024Patents assigned to NANTONG XIEMING TECH CO LTD (2)· patent assignee history
2023–2024Based in CN· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
SICHUAN XIEMING TECH CO LTD42023–2024
UNIV SOUTHWEST PETROLEUM42023–2024
NANTONG XIEMING TECH CO LTD22023–2024
Locations
LocationPatentsSpan
CN42023–2024