Granted Patent
Utility
US 6,631,420 · App. 09/257,866
Reducing convergence time by a protocol independent multicast (PIM) router
Inventors:
Yunzhou Li, Billy Ng
Patented Case
View Patent ↗
Granted: Oct 7, 2003
Filed: Feb 25, 1999
Inventors
Yunzhou Li
Billy Ng
Assignee (at issue)
Nortel Networks Limited
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.