Granted Patent
Utility
US 5,034,444 · App. 07/539,545
Rheological additive for coating compositions
Inventors:
Han B. Yun, Alan E. Smith
Patented Case
View Patent ↗
Granted: Jul 23, 1991
Filed: Jun 18, 1990
Inventors
Han B. Yun
Alan E. Smith
Assignee (at issue)
Rheox 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.