Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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B01J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
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2219/00
Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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B01J2219/32
Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
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B01J2219/322
Basic shape of the elements
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B01J2219/32237
Sheets comprising apertures or perforations
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