Anaerobic digestion with addition of enzymes
US4981592A · kind A · utility
9Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Feb 3, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/836
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Addition of alkaline proteolytic enzymes derived from Bacillis licheniformis in the anaerobic stage of bacterial digestion processes to improve the settling properties of the bacterial biomass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.