Granted Patent
Utility
US 6,696,521 · App. 10/207,256
High performance ortho UPR
Inventors:
Lau S. Yang, Paul M. Puckett
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Jul 29, 2002
Inventors
Lau S. Yang
Paul M. Puckett
Assignee (at issue)
Arco Chemical Technology, L.P.
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.