Granted Patent
Utility
US 6,193,775 · App. 08/102,829
Coated granular fertilizer
Inventors:
Toshio Fujita, Shigemitsu Yoshida
Patented Case
View Patent ↗
Granted: Feb 27, 2001
Filed: Aug 6, 1993
Inventors
Toshio Fujita
Shigemitsu Yoshida
Assignee (at issue)
Chisso Corporation
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.