Granted Patent
Utility
US 6,315,985 · App. 09/592,885
C-17/21 OH 20-ketosteroid solution aerosol products with enhanced chemical stability
Inventors:
Zheng Z. Wu, Nayna Govind, Peter R. Johnson
Patented Case
View Patent ↗
Granted: Nov 13, 2001
Filed: Jun 13, 2000
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.