Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof (treating slag with gases or gas generating material C04B5/06 )

Introduced: January 1985

Title

Titles differ between systems:

IPC: Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof

CPC: Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof (treating slag with gases or gas generating material C04B5/06 )

Full Title

Full titles differ between systems:

IPC:

Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof

CPC:

Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof (treating slag with gases or gas generating material C04B5/06 )

Additional Content IPC

Artificial stone compositions containing fibres, and voids which may occur between the intertwined fibres, but no binders

CPC subdivides this area 3x more granularly than IPC with 12 additional codes.

12 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 1985.

Child Classifications

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C04B 38/0003 CPC only CPC only
C04B 38/0006 +3 CPC CPC only CPC only
C04B 38/0022 +4 CPC CPC only CPC only
C04B 38/0038 +1 CPC CPC only CPC only
C04B 38/0045 +1 CPC CPC only CPC only
C04B 38/0051 +4 CPC CPC only CPC only
C04B 38/0067 CPC only CPC only
C04B 38/007 +2 CPC CPC only CPC only
C04B 38/008 +1 CPC CPC only CPC only
C04B 38/0087 CPC only CPC only
C04B 38/009 CPC only CPC only
C04B 38/0093 +1 CPC CPC only CPC only
C04B 38/02 by adding chemical blowing agents since 1985 +1 CPC IPC+CPC Available in IPC and CPC
C04B 38/04 by dissolving-out added substances since 1985 +1 CPC IPC+CPC Available in IPC and CPC
C04B 38/06 by burning-out added substances since 1985 +5 CPC IPC+CPC Available in IPC and CPC
C04B 38/08 by adding porous substances since 1985 +1 CPC IPC+CPC Available in IPC and CPC
C04B 38/10 by using foaming agents (C04B38/02 takes precedence) since 1985 +2 CPC IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class C04,2013–2023, worldwide · Source: EPO PATSTAT

CHINESE ACADEMY OF SCIENCES 2,095
WUHAN UNIVERSITY OF TECHNOLOGY 1,205
NGK INSULATORS JP 1,133
HALLIBURTON ENERGY SERVICES GROUP US 1,049
SIKA TECHNOLOGY CH 1,041
GUILIN UNIVERSITY OF TECHNOLOGY 807
WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY 806
SOUTHEAST UNIVERSITY 801
CORNING US 777
UNITED STATES GYPSUM COMPANY US 739

Top Applicants (CPC)

Class C04,2013–2023, worldwide · Source: EPO PATSTAT

HALLIBURTON ENERGY SERVICES GROUP US 2,158
CHINESE ACADEMY OF SCIENCES 1,569
NGK INSULATORS JP 1,504
SIKA TECHNOLOGY CH 1,181
CORNING US 974
WUHAN UNIVERSITY OF TECHNOLOGY 926
UNITED STATES GYPSUM COMPANY US 882
GE (GENERAL ELECTRIC COMPANY) US 828
MITSUBISHI MATERIALS CORPORATION JP 792
SAUDI ARABIAN OIL COMPANY SA 686