Microbial production of ultrafine-grained magnetite
US4886752A · kind A · utility
6Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 23, 1988 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Sep 23, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S435/822
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
A method of producing magnetite is disclosed which comprises culturing a microorganism designated GS-15 in the presence of organic matter and a ferric iron compound. Unlike prior art production of magnetite using magnetotactic bacteria, GS-15 is able to produce large amounts of ultrafine-grained magnetite extracellularly under anaerobic conditions, allowing for easy separation and recovery of the magnetite without the need for rigorous control over oxygen tensions in the culture medium. As a result, the method of the present invention can be used to mass produce magnetite efficiently using inexpensive means and materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.