Granted Patent
Utility
US 4,654,409 · App. 06/765,205
Adhesive compositions for composite laminate films comprising polyol, polyisocyanate and anhydride having at least two acid anhydride groups
Inventors:
Naotake Shirai, Michio Sugitani
Patented Case
View Patent ↗
Granted: Mar 31, 1987
Filed: Aug 13, 1985
Inventors
Naotake Shirai
Michio Sugitani
Assignee (at issue)
Dainippon Ink and Chemicals, Inc.
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.