Granted Patent
Utility
US 5,164,429 · App. 07/370,375
Polymer activation apparatus
Inventors:
Carl L. Brazelton, Troy C. Litherland, J. Derek Green, Yong Hoon Kim
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Jun 22, 1989
Inventors
Carl L. Brazelton
Troy C. Litherland
J. Derek Green
Yong Hoon Kim
Assignee (at issue)
Stranco, 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.