Granted Patent
Utility
US 4,887,557 · App. 07/271,269
Process for producing an intake manifold
Inventors:
Minobu Sukimoto, Katsumi Yamazaki, Naohisa Hirunuma, Seijiro Taguchi, Tadashi Usui, Yasushi Akiyoshi, Toyoichiro Nogami, Toyoji Kaneko
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Nov 15, 1988
Inventors
Minobu Sukimoto
Katsumi Yamazaki
Naohisa Hirunuma
Seijiro Taguchi
Tadashi Usui
Yasushi Akiyoshi
Toyoichiro Nogami
Toyoji Kaneko
Assignee (at issue)
Showa Aluminum Corp.
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.