Granted Patent
Utility
US 6,790,959 · App. 10/455,197
Process for manufacturing thebaine
Inventors:
Zhaiwei Lin, Charles A. Francis, Christopher Arne Kaldahl, Kazimierz G. Antczak, Vijai Kumar
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Jun 5, 2003
Inventors
Zhaiwei Lin
Charles A. Francis
Christopher Arne Kaldahl
Kazimierz G. Antczak
Vijai Kumar
Assignee (at issue)
Halsey Drug Company, 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.