Granted Patent
Utility
US 4,886,702 · App. 07/147,060
Process for the preparation of a coagulated material
Inventors:
Dirk P. Spek, Leonardus A. van der Heyden
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Jan 21, 1988
Inventors
Dirk P. Spek
Leonardus A. van der Heyden
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.