Granted Patent
Utility
US 6,557,388 · App. 09/536,722
Method of determining dimension of extrusion die and extrusion die produced based on the same
Inventors:
Akira Mitsumaru, Kazumi Kato, Kazuhiro Itabashi, Toshiyuki Kakinoki
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Mar 28, 2000
Inventors
Akira Mitsumaru
Kazumi Kato
Kazuhiro Itabashi
Toshiyuki Kakinoki
Assignee (at issue)
FURUKAWA ELECTRIC 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.