| 发明名称 |
Cold water-insoluble polyvinyl alcohol pouch for the controlled release of active ingredients |
| 摘要 |
A pouch for the controlled release of active ingredients into an aqueous medium comprising liquid or solid active ingredients enclosed in a sealed envelope of cold water-insoluble polyvinyl alcohol.
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| 申请公布号 |
US4340491(A) |
申请公布日期 |
1982.07.20 |
| 申请号 |
US19810262004 |
申请日期 |
1981.05.08 |
| 申请人 |
AIRWICK INDUSTRIES, INC. |
发明人 |
LEE, PING I. |
| 分类号 |
C02F1/50;C02F1/68;C11D17/04;(IPC1-7):B65D1/20;B65D11/20;C02B3/06 |
主分类号 |
C02F1/50 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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