Granted Patent
Utility
US 6,376,563 · App. 09/745,482
Inline solid state polymerization of PET flakes for manufacturing plastic strap by removing non-crystalline materials from recycled PET
Inventors:
William Donald Robinson, Gary L. Vadnais
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Dec 26, 2000
Inventors
William Donald Robinson
Gary L. Vadnais
Assignee (at issue)
ILLINOIS TOOL WORKS INC.
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.