Granted Patent
Utility
US 6,555,218 · App. 09/867,101
Flame retardant filters
Inventors:
Kristine D. Halloran, Cheryl Y. Chase
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: May 29, 2001
Inventors
Kristine D. Halloran
Cheryl Y. Chase
Assignee (at issue)
H.B. Fuller Licensing & Financing, 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.