Granted Patent
Utility
US 5,427,617 · App. 08/110,463
Methods and compositions for reclaiming concrete
Inventors:
Gregory S. Bobrowski, Gregory C. J. Guecia, David A. Lupyan, Frederick D. Kinney
Patented Case
View Patent ↗
Granted: Jun 27, 1995
Filed: Aug 23, 1993
Inventors
Gregory S. Bobrowski
Gregory C. J. Guecia
David A. Lupyan
Frederick D. Kinney
Assignee (at issue)
Sandoz AG
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.