| 发明名称 |
Optically readable information disc |
| 摘要 |
Optically readable information disc having a substrate plate manufactured by an injection moulding process or a compression moulding process and composed of a mixture of 40-90% by weight of polymethylmethacrylate and 10-60% by weight of polyvinylchloride or chlorinated polyvinylchloride.
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| 申请公布号 |
US4668549(A) |
申请公布日期 |
1987.05.26 |
| 申请号 |
US19860824993 |
申请日期 |
1986.02.03 |
| 申请人 |
U.S. PHILIPS CORPORATION |
发明人 |
LIPPITS, GERARDUS J. M.;LEGIERSE, PETRUS E. J.;DUJARDIN, GEORGE J. P. |
| 分类号 |
B32B27/30;B32B7/02;B41M5/26;C08L27/06;C08L27/24;C08L33/04;C08L33/12;G02B1/04;G11B7/24;G11B7/243;G11B7/253;G11B7/258;(IPC1-7):G01D15/14 |
主分类号 |
B32B27/30 |
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代理人 |
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