Granted Patent
Utility
US 5,037,873 · App. 07/390,790
Water-repellent silane emulsions comprising copolymers of acrylic acid and alkyl methacrylates
Inventor:
Thomas HEATON
Patented Case
View Patent ↗
Granted: Aug 6, 1991
Filed: Aug 8, 1989
Inventor
Thomas HEATON
Assignee (at issue)
PCR, 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.