Granted Patent
Utility
US 6,267,986 · App. 09/405,643
Process for the preparation of a controlled drug delivery system containing pseudoephedrine and a long acting antihistamine
Inventors:
Girish Kumar Jain, Ashok Rampal, Himadri Sen
Patented Case
View Patent ↗
Granted: Jul 31, 2001
Filed: Sep 24, 1999
Inventors
Girish Kumar Jain
Ashok Rampal
Himadri Sen
Assignee (at issue)
RANBAXY LABORATORIES LIMITED
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.