G01N 11/00 Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
Introduced: September 1968
Title
Titles differ between systems:
IPC: Investigating flow properties of materials, e.g. viscosity or plasticity; Analysing materials by determining flow properties
CPC: Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
Full Title
Full titles differ between systems:
Investigating flow properties of materials, e.g. viscosity or plasticity; Analysing materials by determining flow properties
Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
Additional Content IPC
Glossary
viscosity resistance of a fluid to a change in shape, or movement of neighbouring portions relative to one another. Viscosity denotes opposition to flow. The reciprocal of the viscosity is called the fluidity, a measure of the ease of flow. plasticity ability of certain solids to flow or to change shape permanently when subjected to stresses of intermediate magnitude between those producing temporary deformation, or elastic behaviour, and those causing failure of the material, or rupture.
Application references
measuring characteristics of blood in vivo, e.g. blood viscosity, for medical or veterinary diagnosis
CPC subdivides this area 3x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
Note: 4 CPC extensions are marked as secondary classification only.
Child Classifications
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Top Applicants
Top Applicants (IPC)
Class G01,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 41,447
- CHINESE ACADEMY OF SCIENCES 32,952
- ROBERT BOSCH DE 16,470
- SAMSUNG ELECTRONICS COMPANY KR 10,052
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 9,573
- ZHEJIANG UNIVERSITY 9,529
- GUANGDONG POWER GRID CORPORATION 8,615
- TSINGHUA UNIVERSITY 7,805
- HALLIBURTON ENERGY SERVICES GROUP US 7,796
- QUALCOMM US 7,171
Top Applicants (CPC)
Class G01,2013–2023, worldwide · Source: EPO PATSTAT
- CHINESE ACADEMY OF SCIENCES 21,460
- ROBERT BOSCH DE 17,801
- SGCC(STATE GRID CORPORATION OF CHINA) 17,347
- SAMSUNG ELECTRONICS COMPANY KR 13,192
- QUALCOMM US 9,900
- HALLIBURTON ENERGY SERVICES GROUP US 9,742
- PHILIPS ELECTRONICS NL 7,249
- MITSUBISHI ELECTRIC CORPORATION JP 6,503
- ZHEJIANG UNIVERSITY 6,414
- DENSO CORPORATION JP 6,382