Granted Patent
Utility
US 4,542,070 · App. 06/602,081
Process for adhering polyurethane elastomer to metal
Inventors:
Masaaki Ohtani, Takao Harada, Yoshijiro Oyaizu, Tatsuhiko Kobayashi
Patented Case
View Patent ↗
Granted: Sep 17, 1985
Filed: Apr 9, 1984
Inventors
Masaaki Ohtani
Takao Harada
Yoshijiro Oyaizu
Tatsuhiko Kobayashi
Assignees (at issue)
Mitsubishi Chemical Industries, Ltd.
IHARA CHEMICAL INDUSTRY 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.