Granted Patent
Utility
US 6,454,871 · App. 09/466,714
Method of cleaning passageways using a mixed phase flow of gas and a liquid
Inventors:
Mohamed Emam Labib, Ching-Yue Lai, Peter Materna, Geoffrey L. Mahon
Patented Case
View Patent ↗
Granted: Sep 24, 2002
Filed: Dec 17, 1999
Inventors
Mohamed Emam Labib
Ching-Yue Lai
Peter Materna
Geoffrey L. Mahon
Assignee (at issue)
Princeton Trade & Technology, 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.