IPC Main Group
G05D 11/00 Control of flow ratio
Introduced: September 1968
Last revised: January 2006
Classification Context
- Section:
- PHYSICS
- Class:
- CONTROLLING; REGULATING
- Subclass:
- SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
Additional Content
Limiting references
Control of chemical or physico-chemical variables, e.g. pH-value Control of humidity Control of temperature by varying the mixing ratio of two fluids having different temperatures Control of viscosity
Application references
Density control in sedimentation arrangements Forming predetermined ratios of substances to be mixed Controlling the flowability of abrasive blasts Controlling the operation of apparatus for producing mixtures of clays or cements Control devices for bulk material conveyors Controlling the flow ratio in jet-propulsion plants
Related Keywords
control of MIXING ratio of fluidscontrol of RATIO
2 direct subcodes
Child Classifications
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- G05D 11/02 Controlling ratio of two or more flows of fluid or fluent material
- G05D 11/16 Controlling mixing ratio of fluids having different temperatures, e.g. by sensing the temperature of a mixture of fluids having different viscosities
Top Applicants
Top 10 applicants by patent filingsfor class G05, 2013–2023, worldwide · Source: EPO PATSTAT
- SIEMENS DE 4,725
- SGCC(STATE GRID CORPORATION OF CHINA) 4,571
- FANUC JP 4,233
- MITSUBISHI ELECTRIC CORPORATION JP 3,143
- FANUC 2,981
- ROBERT BOSCH DE 2,813
- CHINESE ACADEMY OF SCIENCES 2,500
- LG ELECTRONICS KR 2,182
- OMRON CORPORATION JP 2,036
- SAMSUNG ELECTRONICS COMPANY KR 1,981