Liquid purification or separation – Filter – Supported – shaped or superimposed formed mediums
Reexamination Certificate
2011-04-26
2011-04-26
Lithgow, Thomas M (Department: 1776)
Liquid purification or separation
Filter
Supported, shaped or superimposed formed mediums
C210S487000, C210S491000, C210S493500, C210S499000
Reexamination Certificate
active
07931153
ABSTRACT:
The invention relates to a method of making a solid-liquid filtration cloth, a solid-liquid filtration cloth, and a filter in which the solid-liquid filtration cloth is arranged. The filter cloth (7) is provided with yarns (13b) having a highly changing length and a long free run in the weave. When the length of the yarns (13b) is allowed to shorten significantly, a filtration portion (15) on the side of a surface (14) of the cloth obtains a corrugated shape, providing the cloth with a large filtering area.
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M. Kienbaum, “Bindungstechnik der Gewebe,” 1990, pp. 20-25.
Translation of Mar. 9, 2010 Office Action issued in Japanese Patent Application No. 2007-504432.
Makinen Antti
Rautanen Aimo
Rehakka Heikki
Sorri Eino
Lithgow Thomas M
Oliff & Berridg,e PLC
Tamfelt Filtration Oy
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