Granted Patent
Utility
US 4,889,762 · App. 07/137,054
Molded articles of thermoplastic elastomer
Inventors:
Akira Uchiyama, Katsuo Okamoto
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Dec 23, 1987
Inventors
Akira Uchiyama
Katsuo Okamoto
Assignees (at issue)
Mitsui Petrochemical Industries, Ltd.
Tokusho Shikiryo Color & 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.