Patent Assignment
Reel/Frame 053940/0750
Assignment of Assignor's Interest
Recorded: 2020-09-30
Pages: 7
Assignors
XUE, XIAOWEI
Executed: 2020-09-25
YAO, JIANGUO
Executed: 2020-09-25
WANG, ZHIGUO
Executed: 2020-09-25
REN, GUOFU
Executed: 2020-09-25
HU, XIANGJUN
Executed: 2020-09-25
GUO, SIWEN
Executed: 2020-09-25
ZHAO, MINQI
Executed: 2020-09-25
FENG, CHANGQING
Executed: 2020-09-25
LI, KAI
Executed: 2020-09-25
HUANG, PENGGANG
Executed: 2020-09-25
Assignee
PETROCHINA COMPANY LIMITED
9 DONGZHIMEN NORTH STREET, DONGCHENG DISTRICT, BEIJING, 100007, CHINA
Covered Property
(1)
Metal-Based Dissolvable Ball Seat, Setting System and Setting Method