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PCE
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DIFF Subgroup
B01J 29/40

of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively

Introduced: January 1995

Title

Titles differ between systems:

IPC: of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11

CPC: of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively

Full Title

Full titles differ between systems:

IPC:

Catalysts comprising molecular sieves > having base-exchange properties, e.g. crystalline zeolites, pillared clays > Crystalline aluminosilicate zeolites; Isomorphous compounds thereof > of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11

CPC:

Catalysts comprising molecular sieves > having base-exchange properties, e.g. crystalline zeolites > Crystalline aluminosilicate zeolites; Isomorphous compounds thereof > of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively

Of 3 combined children, 2 exist in both systems.

1 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1995.

Child Classifications

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  • B01J 29/405 CPC only CPC only
  • B01J 29/48 containing arsenic, antimony, bismuth, vanadium, niobium tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium since 1995 IPC+CPC Available in IPC and CPC