Granted Patent
Utility
US 5,538,995 · App. 08/390,316
Difluoroprostacyclins
Inventors:
Yasushi Matsumura, Takashi Nakano, Mayumi Makino, Yoshitomi Morizawa
Patented Case
View Patent ↗
Granted: Jul 23, 1996
Filed: Feb 17, 1995
Inventors
Yasushi Matsumura
Takashi Nakano
Mayumi Makino
Yoshitomi Morizawa
Assignee (at issue)
ASAHI GLASS 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.