| 发明名称 |
Humidity indicators |
| 摘要 |
Silica-based carrier impregnated with iron(III) or iron(II) salts functions as a humidity indicator giving a yellow/amber to nearly colourless colour change as the carrier humidifies.
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| 申请公布号 |
US6927063(B2) |
申请公布日期 |
2005.08.09 |
| 申请号 |
US20040841522 |
申请日期 |
2004.05.10 |
| 申请人 |
INEOS SILICAS LIMITED |
发明人 |
MORETON STEPHEN;EARL GRAHAM J. |
| 分类号 |
G01N21/78;G01N31/00;G01N31/22;(IPC1-7):G01N33/18;G01N21/77 |
主分类号 |
G01N21/78 |
| 代理机构 |
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代理人 |
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| 主权项 |
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