Granted Patent
Utility
US 4,405,799 · App. 06/291,740
Treatment of effluents containing dioxane
Inventors:
Paritosh M. Chakrabarti, Mohamed M. Hashem, Tom M. H. Cheng
Patented Case
View Patent ↗
Granted: Sep 20, 1983
Filed: Aug 10, 1981
Inventors
Paritosh M. Chakrabarti
Mohamed M. Hashem
Tom M. H. Cheng
Assignee (at issue)
GAF Corporation
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.