Process of making beads for a liquid purification bed
US5413749A · kind A · utility
7Cited by
38References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1993 |
| Grant date | May 9, 1995 |
| Priority date | — |
| Expiry date | Jun 4, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2982
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Liquid is purified by passing it through a bed containing disc-shaped buoyant media beads having grooved surfaces. Such beads are formed from a polymeric pellets. The pellets are passed through a scarifier to roughen their surfaces. Pellets are also passed through a rolling mill which grooves the pellets and compresses them into disc-like shapes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.