| 发明名称 |
TRANSPARENT BEADS AND THEIR PRODUCTION METHOD |
| 摘要 |
Transparent solid, fused microspheres are provided. In one embodiment, the microspheres contain alumina, zirconia, and silica in a total content of at least about 70 % by weight, based on the total weight of the solid, fused microspheres, wherein the total content of alumina and zirconia is greater than the content of silica, and further wherein the microspheres have an index of refraction of at least about 1.6 and are useful as lens elements. |
| 申请公布号 |
WO9847830(A1) |
申请公布日期 |
1998.10.29 |
| 申请号 |
WO1998US07618 |
申请日期 |
1998.04.17 |
| 申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
KASAI, TOSHIHIRO;BUDD, KENTON, D.;LIEDER, STEPHEN, L.;LAIRD, JAMES, A.;YOKOYAMA, CHIKAFUMI;NARUSE, TOSHINORI;MATSUMOTO, KENJI;ONO, HIROHIKO |
| 分类号 |
C03C12/02;(IPC1-7):C03C12/02 |
主分类号 |
C03C12/02 |
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