Granted Patent
Utility
US 5,522,893 · App. 08/030,709
Calcium phosphate hydroxyapatite precursor and methods for making and using the same
Inventors:
Laurence C. Chow, Shozo Takagi
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: Mar 12, 1993
Inventors
Laurence C. Chow
Shozo Takagi
Assignee (at issue)
American Dental Association Health Foundation
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.