Granted Patent
Utility
US 5,206,301 · App. 07/536,564
Hydrogenated block copolymer and composition comprising the same
Inventors:
Iwakazu Hattori, Noboru Oshima, Tooru Shibata, Yasuo Takeuchi
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Jul 12, 1990
Inventors
Iwakazu Hattori
Noboru Oshima
Tooru Shibata
Yasuo Takeuchi
Assignee (at issue)
Japan Synthetic Rubber 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.