Granted Patent
Utility
US 6,508,808 · App. 09/748,099
Valve for osmotic devices
Inventors:
John P. Carr, James B. Eckenhoff
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Dec 21, 2000
Inventors
John P. Carr
James B. Eckenhoff
Assignee (at issue)
ALZA CORPORATION
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.