Granted Patent
Utility
US 6,610,273 · App. 09/970,746
Process for making chemically stable C-17/21 OH 20-ketosteroid aerosol products
Inventors:
Zheng Z. Wu, Nayna Govind, Peter R. Johnson
Patented Case
View Patent ↗
Granted: Aug 26, 2003
Filed: Oct 4, 2001
Inventors
Zheng Z. Wu
Nayna Govind
Peter R. Johnson
Assignee (at issue)
3M INNOVATIVE PROPERTIES 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.