Granted Patent
Utility
US 4,558,091 · App. 06/638,382
Method for preparing aluminum and polyhydric alcohol modified liquid absorbing composition
Inventor:
Edward D. Hubbard
Patented Case
View Patent ↗
Granted: Dec 10, 1985
Filed: Aug 7, 1984
Inventor
Edward D. Hubbard
Assignee (at issue)
Grain Processing 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.