Granted Patent
Utility
US 6,420,452 · App. 09/483,165
Silicon-containing chain extenders
Inventors:
Pathiraja Arachchillage Gunatillake, Gordon Francis Meijs, Raju Adhikari
Patented Case
View Patent ↗
Granted: Jul 16, 2002
Filed: Jan 14, 2000
Inventors
Pathiraja Arachchillage Gunatillake
Gordon Francis Meijs
Raju Adhikari
Assignee (at issue)
AorTech Biomaterial PTY LTD.
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.