Granted Patent
Utility
US 4,426,468 · App. 06/413,197
Sealant composition
Inventors:
Joel V. Ornum, Jessie T. Chiu
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Aug 30, 1982
Inventors
Joel V. Ornum
Jessie T. Chiu
Assignee (at issue)
Rockcor, 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.