Granted Patent
Utility
US 6,497,780 · App. 09/590,457
Methods of preparing a microporous article
Inventor:
Steven A. Carlson
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Jun 9, 2000
Inventor
Steven A. Carlson
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.