Method of making a biocompatible filter
US5651931A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1995 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | Dec 28, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2995/006
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for making a biocompatible filter whereby a biocompatible powder is sintered to form a disk-shaped filter. The biocompatible powder is first sized to obtain a preselected average particle size. Next, the powder is introduced to a die in which the powder is pressed to a predetermined force to form "cakes." The pressed powder "cakes" are then placed into an oven or furnace, which is heated to a preselected temperature. The powder cakes are held at the elevated temperature to sinter the particles in the powder together. After a preselected amount of time, the now-sintered powder cakes are removed and allowed to cool. This method produces biocompatible filters useful in liquid chromatography and other applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.