IPC 6 English version G01N !A-G01N 9/36

G01N-G01N00936

SECTION G– PHYSICS

G 01

MEASURING (counting G 06 M); TESTING

G 01 N

INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES (separating components of materials in general B 01 D, B 01 J, B 03, B 07; apparatus fully provided for in a single other subclass, see the relevant subclass, e.g. B 01 L; measuring or testing processes other than immunoassay, involving enzymes or micro-organisms C 12 M, C 12 Q; investigation of foundation soil in situ E 02 D 1/00; sensing humidity changes for compensating measurements of other variables or for compensating readings of instruments for variations in humidity, see G 01 D or the relevant subclass for the variable measured; testing or determining the properties of structures G 01 M; measuring or investigating electric or magnetic properties of materials G 01 R; systems in general for determining distance, velocity or presence by use of propagation effects, e.g. Doppler effect, propagation time, of reflected or reradiated radio waves, analogous arrangements using other waves G 01 S; determining sensitivity, graininess, or density of photographic materials G 03 C 5/02; testing component parts of nuclear reactors G 21 C 17/00)

Notes

(1)

In this subclass, the following terms are used with the meanings indicated:

–

"investigating" means testing or determining;

–

"materials" includes solid, liquid or gaseous media, e.g. the atmosphere.

(2)

Attention is drawn to the Notes following the title of class G 01.

(3)

Investigating the properties of materials, specially adapted for use in processes covered by subclass B 23 K, is classified in group B 23 K 31/12. [5]

Sampling; Preparing specimens for investigation (handling materials for automatic analysis G 01 N 35/00)

Devices for withdrawing samples (for medical or veterinary purposes A 61; obtaining samples of soil or well fluids E 21 B 49/00)

in the solid state, e.g. by cutting

providing a thin slice, e.g. microtome

involving an extracting tool, e.g. core bit

in the liquid or fluent state

Dippers; Dredgers (suction dredgers E 02 F 3/88) [5]

Suction devices, e.g. pumps; Ejector devices

with provision for intake at several levels (G 01 N 1/12, G 01 N 1/14 take precedence)

with provision for splitting samples into portions (G 01 N 1/12, G 01 N 1/14 take precedence; fraction-collection apparatus for chromatography B 01 D 15/08)

for flowing or falling materials (G 01 N 1/12, G 01 N 1/14 take precedence)

in the gaseous state

Suction devices

with provision for intake from several spaces

Preparing specimens for investigation (mounting specimens on microscopic slides G 02 B 21/34; means for supporting the objects or the materials to be analysed in electron microscopes H 01 J 37/20)

Staining; Impregnating

Apparatus therefor [6]

Polishing; Etching

Purifying; Cleaning

Embedding or analogous mounting of samples [6]

Diluting, dispersing or mixing samples [6]

Concentrating samples [6]

Low-temperature sample treatment, e.g. cryofixation [6]

Sample treatment involving radiation, e.g. heat [6]

Investigating strength properties of solid materials by application of mechanical stress (strain gauges G 01 B; measuring stress in general G 01 L 1/00)

Note

This group covers the stressing of materials not only below but also beyond the elastic limit, e.g. until breaking occurs.

Details

Chucks

Special adaptations of indicating or recording means

by applying steady tensile or compressive forces (G 01 N 3/28 takes precedence)

generated by pneumatic or hydraulic pressure (G 01 N 3/18 takes precedence)

Pressure-testing (testing fluid-tightness G 01 M 3/00)

generated by dead weight, e.g. pendulum; generated by spring tension (G 01 N 3/18 takes precedence)

applied through gearing (G 01 N 3/18 takes precedence)

Performing tests at high or low temperatures

by applying steady bending forces (G 01 N 3/26, G 01 N 3/28 take precedence)

by applying steady torsional forces (G 01 N 3/26, G 01 N 3/28 take precedence)

by applying steady shearing forces (G 01 N 3/26, G 01 N 3/28 take precedence)

Investigating twisting or coiling properties

Investigating ductility, e.g. suitability of sheet metal for deep-drawing or spinning

by applying a single impulsive force, e.g. by falling weight

by applying repeated or pulsating forces (generation of such forces in general, see the relevant classes or subclasses, e.g. B 06, G 10)

generated by mechanical means, e.g. hammer blows

generated by pneumatic or hydraulic means

generated by electromagnetic means

Investigating hardness or rebound hardness

by performing impressions under a steady load by indentors, e.g. sphere, pyramid (G 01 N 3/54 takes precedence)

the indentors being put under a minor load and a subsequent major load, i.e. Rockwell system

the indentors performing a scratching movement

by performing impressions under impulsive load by indentors, e.g. falling ball (G 01 N 3/54 takes precedence)

by measuring rolling friction, e.g. by rocking pendulum (G 01 N 3/54 takes precedence)

by measuring extent of rebound of a striking body (G 01 N 3/54 takes precedence)

Performing tests at high or low temperatures

Investigating resistance to wear or abrasion

Investigating machinability by cutting tools; Investigating the cutting ability of tools

Investigating resistance of materials, e.g. refractory materials, to rapid heat changes

Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups

Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid (G 01 N 9/00 takes precedence)

by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content

by removing a component, e.g. by evaporation, and weighing the remainder

Analysing materials by measuring the pressure or volume of a gas or vapour

by absorption, adsorption, or combustion of components and measurement of the change in pressure or volume of the remainder

by absorption or adsorption alone

by combustion alone

by combustion followed by absorption or adsorption of the combustion products

by allowing diffusion of components through a porous wall and measuring a pressure or volume difference

the diffusion being followed by combustion or catalytic oxidation

by allowing the material to emit a gas or vapour, e.g. water vapour, and measuring a pressure or volume difference

by heating the material

by allowing the material to react

the reaction being fermentation

of dough

Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity (weighing apparatus G 01 G)

by measuring weight of a known volume

of fluids

with continuous circulation through a pivotally-supported member

by measuring buoyant force of solid materials by weighing both in air and in a liquid

by observing bodies wholly or partially immersed in fluid materials

by observing the depth of immersion of the bodies, e.g. hydrometers

the body being built into a container

the body being pivoted

Special adaptations for indicating, recording, or control

by balancing the weight of the bodies

with continuous circulation of the fluid

by observing the transmission of wave or particle radiation through the material

by measuring pressure differences

by measuring the blowing pressure of gas bubbles escaping from nozzles at different depths in a liquid

by using centrifugal effects

by using flow properties of fluids, e.g. flow through tubes or apertures

by using elements moving through the fluid, e.g. vane

Analysing materials by measuring the density or specific gravity, e.g. determining quantity of moisture (methods of measurement in general G 01 N 9/02 to G 01 N 9/32)

G01N 11/00 - G01N 21/91