IP Library › Assignment 033399/0350
Patent Assignment
Reel/Frame 033399/0350

Change of Name

Recorded: 2014-07-28 Pages: 5
Assignor
Assignee
BEIJING OTC ENERGY & ENVIRONMENT ENGINEERING PUBLIC LIMITED COMPANY
SUITE 1210, CEC BUILDING, NO. 6 ZHOGGUANCUN SOUTH STREET, HAIDIAN DISTRICT, BEIJING, 100086, CHINA
Covered Property (1)
Device for Purifying Oily Wastewater
Patent: 8,828,224 →
Application: 13/144,865 →
Publication: US 2013/0062272
Related Assignments (1)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest Jul 20, 2011
From: JIANG, XUEWEN; ZHANG, YUKAI; WU, YANGSHAN
To: BEIJING OIL TECH & ENGINEERING CO. LTD.
Reel/Frame 026623/0919 →