Granted Patent
Utility
US 5,407,477 · App. 08/107,096
Thixotropic organoclay additive for highly viscous system
Inventors:
William Reynolds, Robert Van Doren, Charles A. Cody
Patented Case
View Patent ↗
Granted: Apr 18, 1995
Filed: Aug 16, 1993
Inventors
William Reynolds
Robert Van Doren
Charles A. Cody
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.