Granted Patent
Utility
US 5,514,447 · App. 08/232,773
Gas-introduced injection molding and method of obtaining the same
Inventors:
Mamoru Kimura, Takayoshi Tanaka
Patented Case
View Patent ↗
Granted: May 7, 1996
Filed: Apr 25, 1994
Inventors
Mamoru Kimura
Takayoshi Tanaka
Assignee (at issue)
Idemitsu Petrochemical 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.