Biodegradation and recovery of gallium and other metals from integrated circuits
US5030425A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1989 |
| Grant date | Jul 9, 1991 |
| Priority date | — |
| Expiry date | Jun 27, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Disclosed is a process for leaching selected metal compounds (e.g. gallium arsenide) from integrated circuits containing those compounds. The method includes placing the integrated circuits into a culture medium containing bacteria. Bacteria capable of leaching the metal compounds from the integrated circuits leach the metals from the integrated circuits. The bacteria preferably used will be ATCC 53921 and mutations and recombinants thereof. The integrated circuits are generally crushed to between 20 and -400 mesh before placement into the This invention was made with Government support under Contract No. F33615-87-C-5303 awarded by the United States Air Force. The Government has certain rights in this invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.