Granted Patent
Utility
US 5,346,987 · App. 07/947,972
Preparation of compounded rubber composition from bubble-containing ethylene/.alpha.-olefin rubber
Inventors:
Takashi Nakahara, Toshiaki Kimura, Takashi Mishima
Patented Case
View Patent ↗
Granted: Sep 13, 1994
Filed: Sep 21, 1992
Inventors
Takashi Nakahara
Toshiaki Kimura
Takashi Mishima
Assignee (at issue)
Mitsui Petrochemical 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.