Granted Patent
Utility
US 6,544,104 · App. 10/049,664
Polishing pad and polisher
Inventors:
Hisao Koike, Takeshi Arai, Akihiko Ikeda
Patented Case
View Patent ↗
Granted: Apr 8, 2003
Filed: Feb 15, 2002
Inventors
Hisao Koike
Takeshi Arai
Akihiko Ikeda
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.