Granted Patent
Utility
US 6,273,143 · App. 09/442,136
Bonding of steel strips in steel strip laminate pipe
Inventors:
Ralph Friedrich, Garrett J. Endres, Qizhong Sheng, Lamont Thomas Inglehart, Stephan de Bie, Jeroen Van Brakel
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Nov 17, 1999
Inventors
Ralph Friedrich
Garrett J. Endres
Qizhong Sheng
Lamont Thomas Inglehart
Stephan de Bie
Jeroen Van Brakel
Assignee (at issue)
AMERON INTERNATIONAL 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.