Granted Patent
Utility
US 4,650,783 · App. 06/811,554
Phosphorus modified alumina molecular sieve and method of manufacture
Inventors:
Tai-Hsiang Chao, Michael T. Cleary
Patented Case
View Patent ↗
Granted: Mar 17, 1987
Filed: Dec 20, 1985
Inventors
Tai-Hsiang Chao
Michael T. Cleary
Assignee (at issue)
UOP LLC
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.