Granted Patent
Utility
US 6,258,432 · App. 09/284,312
Optical information recording medium and production method thereof
Inventors:
Masato Terada, Tatsuya Okamura, Kazuyuki Furuya
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Apr 27, 1999
Inventors
Masato Terada
Tatsuya Okamura
Kazuyuki Furuya
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.