Lavatory cleansing block having two fragrance regions
US6376442B1 · kind B1 · utility
18Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2000 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Aug 30, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A lavatory cleansing block having a perceived approximately constant intensity of fragrance throughout the life of the block, which comprises an inner region having an inner fragrance and an outer region having an outer fragrance which is different from said inner fragrance. The inner fragrance is present in a concentration by weight which is less than or equal to 1.1 times the concentration of the outer fragrance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.