Method of making a filter for preparations

Details Method of making a filter for preparations Method of making a filter for preparations

1995-05-24

1997-02-11

Kim, John

Liquid purification or separation

Filter

Supported, shaped or superimposed formed mediums

156250, 210232, 210506, 264DIG48, 422 58, B01D 3500, G01N 3348

Patent

active

056017189

ABSTRACT:
The invention is directed to a method for making filter preparations including a filter sheet for receiving specimens thereon. The method includes cutting a flexible sheet of material to form a filter frame, and slitting the filter frame to form two slits with a central hole therebetween. The two slits define inner edges of parallel framing parts in the filter frames and outer edges of a presser part. One end of the presser part is pulled upward, and the filter sheet is inserted between the presser parts and the parallel framing parts. Then, the presser part is released downward and restored to its original position, so that the filter sheet contacts an undersurface of the presser part and is contained in the slits between the presser part and the parallel framing parts. The filter sheet also adheres to an upper surface of the parallel framing parts and a portion of the filter sheet is exposed through the central hole for receiving mounting specimens thereon.

REFERENCES:
patent: 2282301 (1942-05-01), Petersen
patent: 3990850 (1976-11-01), Friedman et al.
patent: 4789629 (1988-12-01), Baker et al.
patent: 4818677 (1989-04-01), Hay-Kaufman et al.
patent: 5064766 (1991-11-01), Wardlaw et al.
patent: 5104619 (1992-04-01), de Castro et al.
patent: 5106582 (1992-04-01), Baker

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