Granted Patent
Utility
US 5,296,164 · App. 07/908,299
High-stability foams for long-term suppression of hydrocarbon vapors
Inventors:
Sophany Thach, Kenneth C. Miller, Karen S. Schultz
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Jul 2, 1992
Inventors
Sophany Thach
Kenneth C. Miller
Karen S. Schultz
Assignee (at issue)
Atlantic Richfield Company
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.