Granted Patent
Utility
US 5,601,642 · App. 08/282,664
Bituminous compositions for soundproofing materials
Inventors:
Bruno Drieskens, Jean-Phillippe Hallet, Nicoles M. Lecouvet
Patented Case
View Patent ↗
Granted: Feb 11, 1997
Filed: Jul 29, 1994
Inventors
Bruno Drieskens
Jean-Phillippe Hallet
Nicoles M. Lecouvet
Assignee (at issue)
Fina Research, S.A.
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.