Granted Patent
Utility
US 6,433,033 · App. 09/502,088
High-durability flexible polyurethane cold cure molded foam and process for producing the same
Inventors:
Masahiro Isobe, Kazuhiko Ohkubo, Seijiro Sakai
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Feb 10, 2000
Inventors
Masahiro Isobe
Kazuhiko Ohkubo
Seijiro Sakai
Assignee (at issue)
MITSUI 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.