Granted Patent
Utility
US 5,437,722 · App. 08/203,807
Water-resistant gypsum compositions and emulsion for making same
Inventor:
Lionel Borenstein
Patented Case
View Patent ↗
Granted: Aug 1, 1995
Filed: Mar 1, 1994
Inventor
Lionel Borenstein
Assignee (at issue)
Bakor 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.