Method for removing stains from carpet and textiles
US5259848A · kind A · utility
27Cited by
5References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1991 |
| Grant date | Nov 9, 1993 |
| Priority date | — |
| Expiry date | Mar 28, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3947
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method to remove stubborn stains that includes application of an ammonium salt in combination with a peroxide. In the preferred embodiment, the stain removing solution contains ammonium bicarbonate and peroxide. A major advantage of the method is that the solution is strong enough to remove coffee and tea stains yet sufficiently mild that it does not damage the carpet or pose a significant health hazard to the person treating the stain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.