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1. (WO1998050915) OPTICAL RECORDING MEDIUM AND METHOD OF INFORMATION RECORDING/REPRODUCTION USING THE SAME
Available information on National Phase entries(more information)
OfficeEntry DateNational NumberNational Status
China 07.05.199898804870.1
European Patent Office 04.11.19991998919503Published: 01.03.2000
Granted: 24.03.2004
United States of America 05.11.199909423244
Republic of Korea 08.11.19991019997010320Published: 15.02.2001
Refused: 12.12.2001