Granted Patent
Utility
US 6,670,470 · App. 09/522,826
Modified starch
Inventors:
Hannu Ketola, Peggy Hagberg
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Mar 10, 2000
Inventors
Hannu Ketola
Peggy Hagberg
Assignee (at issue)
Raisio Chemicals, 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.