Granted Patent
Utility
US 4,675,188 · App. 06/761,986
Granular anhydrous dicalcium phosphate compositions suitable for direct compression tableting
Inventor:
Chihang R. Chu
Patented Case
View Patent ↗
Granted: Jun 23, 1987
Filed: Aug 2, 1985
Inventor
Chihang R. Chu
Assignee (at issue)
Stauffer 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.