Granted Patent
Utility
US 5,620,709 · App. 08/274,867
Calcium containing composition from sea urchin with high oral bioavailability
Inventors:
Yoshinari Kumagai, Azuma Kubo
Patented Case
View Patent ↗
Granted: Apr 15, 1997
Filed: Jul 14, 1994
Inventors
Yoshinari Kumagai
Azuma Kubo
Assignee (at issue)
Kabushiki Kaisha Megawave Japan
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.