Patent Assignment
Reel/Frame 074413/0589
Assignment of Assignor's Interest
Recorded: 2026-04-20
Pages: 3
Assignor
CARBON NANO ENGINEERING SYSTEMS CO., LTD.
Executed: 2026-04-13
Assignee
HUNAN YUANCHANG NEW MATERIAL TECHNOLOGY CO., LTD.
601, BUILDING 5, PHASE 1 FACTORY OF CENTRAL INTELLIGENCE VALLEY, NO. 189, SECTION 2, RENMIN EAST ROAD, CHANGSHA ECONOMIC AND TECHNOLOGICAL DEVELOPMENT ZONE, CHANGSHA CITY, HUNAN PROVINCE, 410100, CHINA
Covered Properties
(2)
A Preparation Method of Graphene as Well as Graphene Oxide Based on Anthracite
Preparation Method of Graphene
Related Assignments
(5)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Jun 21, 2016
From: ZHANG, LINDE; ZHANG, MINGDONG
To: SHENZHEN CANTONNET ENERGY SERVICES CO. , LTD.
Reel/Frame 039092/0682 →
Assignment of Assignor's Interest
Oct 18, 2017
From: ZHANG, LINDE; ZHANG, MINGDONG
To: SHENZHEN CANTONNET ENERGY SERVICES CO. , LTD.
Reel/Frame 044219/0549 →
Assignment of Assignor's Interest
Apr 7, 2022
From: SHENZHEN CANTONNET ENERGY SERVICES CO. , LTD.
To: HUBEI HIGHLAND GRAPHENE TECHNOLOGY CO., LTD.
Reel/Frame 059537/0154 →
Assignment of Assignor's Interest
Apr 7, 2022
From: SHENZHEN CANTONNET ENERGY SERVICES CO. , LTD.
To: HUBEI HIGHLAND GRAPHENE TECHNOLOGY CO., LTD.
Reel/Frame 059537/0228 →
Assignment of Assignor's Interest
Aug 1, 2025
From: HUBEI HIGHLAND GRAPHENE TECHNOLOGY CO., LTD.
To: CARBON NANO ENGINEERING SYSTEMS CO., LTD.
Reel/Frame 071904/0322 →