Granted Patent
Utility
US 6,257,233 · App. 09/312,434
Dry powder dispersing apparatus and methods for their use
Inventors:
John D. Burr, Adrian Edward Smith, Randy K. Hall, Herman E. Snyder, Carlos Schuler, George S. Axford, Charles Ray
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: May 14, 1999
Inventors
John D. Burr
Adrian Edward Smith
Randy K. Hall
Herman E. Snyder
Carlos Schuler
George S. Axford
Charles Ray
Assignee (at issue)
Inhale Therapeutic Systems, 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.