Granted Patent
Utility
US 6,739,160 · App. 09/600,490
Lint-free wiper
Inventors:
Satoshi Hiraga, Kazunari Nishiyama
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Jul 18, 2000
Inventors
Satoshi Hiraga
Kazunari Nishiyama
Assignee (at issue)
ASAHI KASEI KABUSHIKI KAISHA
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.