Granted Patent
Utility
US 4,476,032 · App. 06/262,026
Method of increasing the rate of hydration of activated hydroethyl cellulose compositions
Inventors:
Roy F. House, Lonnie D. Hoover
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: May 8, 1981
Inventors
Roy F. House
Lonnie D. Hoover
Assignee (at issue)
NL Industries, 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.