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US 6,632,500 B1Granted
Laminated disc and information recording disc
AssigneeZeon Corporation
InventorHaruhiko Takahashi
Life of this patent
Estimating the term…
Abstract
A laminated disc composed of at least two supporting discs superposed upon another, each of the supporting discs having a thickness of 0.01 to 1 mm and being made of a vinyl alicyclic hydrocarbon polymer. This laminated disc is used as an optical disc including digital video disc (DVD).
Claims15
A laminated disc composed of at least two supporting discs superposed upon another;
- each supporting disc having a thickness of 0.01 to 1 mm and being made of a vinyl alicyclic hydrocarbon polymer.
Dependencies are inferred from the claim text.