Method for unclogging drainage pipes
US4610800A · kind A · utility
26Cited by
10References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1985 |
| Grant date | Sep 9, 1986 |
| Priority date | — |
| Expiry date | Jan 25, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D2111/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Drainage pipes, such as toilet drains, which are clogged with cellulosic paper products, are unclogged by contacting the paper with a cellulase enzyme in the form of an aqueous solution, a viscous fluid comprising the enzyme dispersed in a non-cellulosic water-soluble natural or synthetic gum, or solid particles comprising the enzyme dispersed in a water-soluble polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.