Granted Patent
Utility
US 6,759,461 · App. 10/196,188
Phenolic phosphite antioxidants and polymer compositions containing said antioxidant
Inventors:
Tseng-Rong Wu, Pin-Yang Yu, Yi-Chin Lin, Te-Chuan Chang
Patented Case
View Patent ↗
Granted: Jul 6, 2004
Filed: Jul 17, 2002
Inventors
Tseng-Rong Wu
Pin-Yang Yu
Yi-Chin Lin
Te-Chuan Chang
Assignee (at issue)
CHUNG-SHAN INSTITUTE OF SCIENCE AND TECHNOLOGY
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.