Granted Patent
Utility
US 5,364,610 · App. 08/076,861
Process for preparation of high opacity precipitated calcium carbonate by reacting sodium carbonate with calcium hydroxide
Inventor:
Charles S. Merris, Jr.
Patented Case
View Patent ↗
Granted: Nov 15, 1994
Filed: Jun 15, 1993
Inventor
Charles S. Merris, Jr.
Assignee (at issue)
P.H. Glatfelter 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.