Granted Patent
Utility
US 5,405,690 · App. 08/250,864
Rubber-rubber bonded composite structure
Inventor:
Hiroshi Hirakawa
Patented Case
View Patent ↗
Granted: Apr 11, 1995
Filed: May 27, 1994
Inventor
Hiroshi Hirakawa
Assignee (at issue)
The Yokohama Rubber 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.