Granted Patent
Utility
US 5,114,830 · App. 07/264,223
Solder mask resins having improved stability containing a multifunctional epoxide and a partial ester or styrene-maleic anhydride copolymer
Inventor:
Sherry L. Surber
Patented Case
View Patent ↗
Granted: May 19, 1992
Filed: Oct 28, 1988
Inventor
Sherry L. Surber
Assignee (at issue)
W.R. Grace & Co. Conn.
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.