Granted Patent
Utility
US 5,085,700 · App. 07/608,396
High purity, high temperature pipe thread sealant paste
Inventor:
Ronald A. Howard
Patented Case
View Patent ↗
Granted: Feb 4, 1992
Filed: Nov 2, 1990
Inventor
Ronald A. Howard
Assignee (at issue)
UCAR Carbon Technology Corporation
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.