Granted Patent
Utility
US 6,812,264 · App. 10/380,390
Foamable polyester resin composition
Inventors:
Takenobu Sunagawa, Mamoru Kadokura
Patented Case
View Patent ↗
Granted: Nov 2, 2004
Filed: Mar 10, 2003
Inventors
Takenobu Sunagawa
Mamoru Kadokura
Assignee (at issue)
KANEKA 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.