Granted Patent
Utility
US 4,801,641 · App. 07/046,352
Rubber compositions and pneumatic tires using the same
Inventors:
Masaki Ogawa, Yasuro Shiomura, Toshiki Takizawa
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: May 6, 1987
Inventors
Masaki Ogawa
Yasuro Shiomura
Toshiki Takizawa
Assignee (at issue)
BRIDGESTONE CORPORATION
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.