Granted Patent
Utility
US 6,287,730 · App. 09/134,622
Hydrophilic polyolefin having a coating containing a surfactant and an EVOH copolymer
Inventors:
Robert W. Callahan, Khuy V. Nguyen
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Aug 14, 1998
Inventors
Robert W. Callahan
Khuy V. Nguyen
Assignee (at issue)
Celgard, LLC
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.