Granted Patent
Utility
US 6,639,071 · App. 10/000,537
Crystal Forms of (-)-6-chloro-4-cyclopropylethynyl-4-trifluoromethyl-1,4-dihydro-2H-3,1-benzoxazin-2-one
Inventors:
Louis Crocker, Joseph L. Kukura, II, Andrew S. Thompson, Christine Stelmach, Steven D. Young
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Oct 19, 2001
Inventors
Louis Crocker
Joseph L. Kukura, II
Andrew S. Thompson
Christine Stelmach
Steven D. Young
Assignee (at issue)
MERCK & CO., 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.