Granted Patent
Utility
US 5,837,769 · App. 08/566,651
Free flowing elastomer powder
Inventors:
Tenunis Graafland, Peter Migchels
Patented Case
View Patent ↗
Granted: Nov 17, 1998
Filed: Dec 4, 1995
Inventors
Tenunis Graafland
Peter Migchels
Assignee (at issue)
SHELL OIL COMPANY
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.