Granted Patent
Utility
US 6,346,556 · App. 09/826,990
Silicone rubber sponge composition, sponge, and process for making
Inventors:
Katsuya Baba, Manabu Suto, Akito Nakamura
Patented Case
View Patent ↗
Granted: Feb 12, 2002
Filed: Apr 5, 2001
Inventors
Katsuya Baba
Manabu Suto
Akito Nakamura
Assignee (at issue)
Dow Corning Toray Silicone Company, 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.