Granted Patent
Utility
US 6,254,736 · App. 09/386,562
Method of selectively increasing the hydrophilicity of a web
Inventors:
Robert Kitchel Earl, Brian A. Heald
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Aug 31, 1999
Inventors
Robert Kitchel Earl
Brian A. Heald
Assignee (at issue)
Roche Diagnostics GMBH
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.