Granted Patent
Utility
US 6,605,720 · App. 10/349,835
Process for making spirolactone compounds
Inventors:
Kenji Maeda, Shinji Kato, Takehiko Iida, David M. Tschaen
Patented Case
View Patent ↗
Granted: Aug 12, 2003
Filed: Jan 23, 2003
Inventors
Kenji Maeda
Shinji Kato
Takehiko Iida
David M. Tschaen
Assignees (at issue)
MERCK & CO., INC.
Banyu Pharmaceutical Co. Ltd
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.