Granted Patent
Utility
US 6,503,288 · App. 08/777,427
Process for the production of biodegradable encapsulated fertilizers
Inventor:
Peter H. Markusch
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Dec 30, 1996
Inventor
Peter H. Markusch
Assignee (at issue)
Bayer Aktiengesellschaft
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.