Granted Patent
Utility
US 6,245,263 · App. 09/242,820
Process of injection molding a foamable plastic composition
Inventors:
Michio Yoshizaki, Koichi Honda
Patented Case
View Patent ↗
Granted: Jun 12, 2001
Filed: Feb 24, 1999
Inventors
Michio Yoshizaki
Koichi Honda
Assignee (at issue)
Chisso 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.