| 发明名称 |
Color change perfume systems |
| 摘要 |
This invention provides a color change perfume system in which color is caused to change when the perfume in the system is effectively exhausted to the atmosphere. The invention also provides air fresheners and the like consisting of a porous carrier impregnated with the perfumed color change system.
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| 申请公布号 |
US4128508(A) |
申请公布日期 |
1978.12.05 |
| 申请号 |
US19770808737 |
申请日期 |
1977.06.22 |
| 申请人 |
INTERNATIONAL OCTROOIMAATSCHAPPIJ "OCTROPA"+0 BV |
发明人 |
MUNDEN, DAVID R. |
| 分类号 |
A61L9/04;A61L9/01;G01N31/22;(IPC1-7):C11B9/00 |
主分类号 |
A61L9/04 |
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