Granted Patent
Utility
US 6,711,941 · App. 09/928,643
Apparatus and methods for measuring extensional rheological properties of a material
Inventors:
Gavin Braithwaite, Stephen H. Spiegelberg, Gareth H. McKinley
Patented Case
View Patent ↗
Granted: Mar 30, 2004
Filed: Aug 13, 2001
Inventors
Gavin Braithwaite
Stephen H. Spiegelberg
Gareth H. McKinley
Assignee (at issue)
Cambridge Polymer Group, 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.