Granted Patent
Utility
US 5,202,352 · App. 07/740,849
Intravascular embolizing agent containing angiogenesis-inhibiting substance
Inventors:
Hiroaki Okada, Shigeru Kamei, Toshio Yoshioka
Patented Case
View Patent ↗
Granted: Apr 13, 1993
Filed: Aug 6, 1991
Inventors
Hiroaki Okada
Shigeru Kamei
Toshio Yoshioka
Assignee (at issue)
Takeda Chemical Industries 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.