Granted Patent
Utility
US 6,660,294 · App. 09/269,725
Poultry eggshell strengthening composition
Inventors:
Kiyoshi Maruta, Hiroshi Miyazaki
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Apr 2, 1999
Inventors
Kiyoshi Maruta
Hiroshi Miyazaki
Assignee (at issue)
CALPIS CO., LTD.
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.