Assignment of Assignor's Interest

Recorded: 2025-05-29 Pages: 3

Assignors

MA, TIANMING

Executed: 2025-05-21

REN, WANMENG

Executed: 2025-05-21

ZHANG, ZHENGXU

Executed: 2025-05-21

Assignee

CHENGDU ROCK PETROLEUM CO., LTD

199 # , HUQIAO ROAD, EAST INDUSTRIAL PARK, XINDU DISTRICT, CHENGDU, SICHUAN, CHINA

Covered Property (1)

Integrated Selective-Firing Detonator Special for Oil and Gas Wells

Patent: 12,467,343 →

Application: 19/219,449 →