Granted Patent
Utility
US 5,507,980 · App. 08/380,866
Basic inorganic binders
Inventors:
Chandrashekhar P. Kelkar, Alain Schutz, Leonard A. Cullo
Patented Case
View Patent ↗
Granted: Apr 16, 1996
Filed: Jan 30, 1995
Inventors
Chandrashekhar P. Kelkar
Alain Schutz
Leonard A. Cullo
Assignee (at issue)
Aristech Chemical Company
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.