Patent Assignment
Reel/Frame 031144/0429
Assignment of Assignor's Interest
Recorded: 2013-09-05
Pages: 4
Assignors
CHENG, CHE JIM
Executed: 2013-07-01
SONG, FEI
Executed: 2013-07-01
PAN, YONGMEI
Executed: 2013-07-01
Assignee
BEIJING SUNPU BIOCHEM. TECH. CO., LTD.
NO. 4 DONGBINHE ROAD YOUANMENWAI,, FENGTAI DISTRICT, BEIJING, 100069, CHINA
Covered Property
(1)
Method for Preparation of Aryl Poly(Oxalkyl) Quaternary Ammonium Compound