Compositions of metallic and non-metallic components of wiring assemblies and printed wiring boards
US5887805A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 10, 1997 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Apr 10, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S241/38
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Preferred processes to separate metallic and non-metallic constituent components of at least one electronic product are generally comprised of the following steps: (a) repeatedly crushing the at least one electronic product to create a plurality of crushed electronic components; (b) repeatedly screening the plurality of crushed electronic components to ensure that the plurality of crushed electronic components substantially conform to a specific size; and (c) separating the plurality of crushed electronic components after steps (a) and (b) into non-metallic constituent components and metallic constituent components by weight. In addition, before step (a), the at least one electronic product must be provided or otherwise transported to crushing machines to perform step (a). Likewise, the crushed electronic components must be transported from one crushing machine to another crushing machine and to the separating apparatus to perform step (c). At least three crushing machines are generally used, so that the at least one electronic product are generally crushed at least three times (and transported between the crushing machines). The crushed electronic products are also periodically sc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.