Granted Patent
Utility
US 4,302,369 · App. 06/138,466
Aluminum modified water absorbent composition
Inventor:
Lyle F. Elmquist
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Apr 8, 1980
Inventor
Lyle F. Elmquist
Assignee (at issue)
Henkel Limited
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.