Granted Patent
Utility
US 6,789,119 · App. 09/449,011
Emulating a persistent connection using http
Inventors:
Min Zhu, Shi Yan, Shangde Zhou
Patented Case
View Patent ↗
Granted: Sep 7, 2004
Filed: Nov 24, 1999
Inventors
Min Zhu
Shi Yan
Shangde Zhou
Assignee (at issue)
WebEx Communications, Inc.
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.