Granted Patent
Utility
US 5,236,994 · App. 07/676,678
Process for sealing and/or priming concrete with aqueous polyisocyanate dispersions and the concrete obtained by this process
Inventors:
Peter H. Markusch, William Cibulas, Robin E. Tirpak
Patented Case
View Patent ↗
Granted: Aug 17, 1993
Filed: Mar 28, 1991
Inventors
Peter H. Markusch
William Cibulas
Robin E. Tirpak
Assignee (at issue)
Miles 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.