Toilet cleansing block
US5990061A · kind A · utility
9Cited by
24References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1996 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | May 17, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D1/143
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A toilet cleansing block contains anionic surfactant such as a sulfonate, linear primary alcohol such as Neodol 23, and binder such as hydroxy ethyl cellulose. The block erodes very slowly, yet at essentially identical rates in hard or soft water. The block is for immersion in toilet tanks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.