Granted Patent
Utility
US 5,843,318 · App. 08/837,221
Methods of purifying hydroxlamine solutions and separating hydroxylamine from hydroxlamine salts
Inventors:
Hossein Sharifian, Christopher D. Shay
Patented Case
View Patent ↗
Granted: Dec 1, 1998
Filed: Apr 10, 1997
Inventors
Hossein Sharifian
Christopher D. Shay
Assignee (at issue)
SACHEM, 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.