Granted Patent
Utility
US 6,274,192 · App. 09/254,620
Aqueous concrete parting agents
Inventors:
Juergen Falkowski, Stephan Heck, Norbert Huebner, Ingo Wegener
Patented Case
View Patent ↗
Granted: Aug 14, 2001
Filed: Mar 11, 1999
Inventors
Juergen Falkowski
Stephan Heck
Norbert Huebner
Ingo Wegener
Assignee (at issue)
Henkel Kommanditgesellschaft auf Aktien
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.