Granted Patent
Utility
US 6,670,522 · App. 09/620,947
Wetlaid unitary stratified composite
Inventors:
Peter A. Graef, Colin Elston, Daniel Bunker, Fred B. Howard, Jeffrey D. Mathews, Shahrokh A. Naieni, Charles E. Miller
Patented Case
View Patent ↗
Granted: Dec 30, 2003
Filed: Jul 21, 2000
Inventors
Peter A. Graef
Colin Elston
Daniel Bunker
Fred B. Howard
Jeffrey D. Mathews
Shahrokh A. Naieni
Charles E. Miller
Assignee (at issue)
Weyerhaeuser NR Company
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.