Granted Patent
Utility
US 5,728,744 · App. 08/754,800
Olefin thermoplastic elastomer foamed products and processes for preparing the same
Inventors:
Keiji Okada, Masato Karaiwa, Akira Uchiyama
Patented Case
View Patent ↗
Granted: Mar 17, 1998
Filed: Nov 21, 1996
Inventors
Keiji Okada
Masato Karaiwa
Akira Uchiyama
Assignee (at issue)
Mitsui Petrochemical Industries, 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.