■B03B 5/00
Washing granular, powdered or lumpy materials; Wet separating
■B03B 7/00
Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
■B03C 1/00
Magnetic separation
■B03C 3/00
Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
■B03C 5/00
Separating dispersed particles from liquids by electrostatic effect
■B60C 1/00
Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
■B60G 7/00
Pivoted suspension arms; Accessories thereof
■B60G 17/00
Resilient suspensions having means for adjusting the spring or vibration-damper characteristics
■B60L 1/00
Supplying electric power to auxiliary equipment of vehicles
■B60L 5/00
Current-collectors for power supply lines of electrically-propelled vehicles
■B60L 7/00
Electrodynamic brake systems for vehicles in general
■B60L 15/00
Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
■B60M 7/00
Power lines or rails specially adapted for electrically-propelled vehicles of special types
■B61B
RAILWAY SYSTEMS
■B61C
LOCOMOTIVES
■B61D
BODY DETAILS OR KINDS OF RAILWAY VEHICLES
■B61F
RAIL VEHICLE SUSPENSIONS
■B61G
COUPLINGS
■B61H
BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAIL VEHICLES
■B61J
SHIFTING OR SHUNTING OF RAIL VEHICLES
■C01B 3/00
Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it (separation of gases by physical means B01D); Purification of hydrogen
■C01B 5/00
Water
■C01F 7/00
Halogens; Halogen acids
■C01G 1/00
Methods of preparing compounds of metals not covered by subclasses C01B, C, D, F, in general
■C01G 3/00
Compounds of copper
■C01G 9/00
Compounds of zinc
■C01G 15/00
Compounds of gallium, indium, or thallium
■C01G 19/00
Compounds of tin
■C01G 23/00
Compounds of titanium
■C01G 25/00
Compounds of zirconium
■C01G 29/00
Compounds of bismuth
■C01G 31/00
Compounds of vanadium
■C01G 33/00
Compounds of niobium
■C01G 35/00
Compounds of tantalum
■C01G 39/00
Compounds of molybdenum
■C01G 41/00
Compounds of tungsten
■C01G 45/00
Compounds of manganese
■C01G 49/00
Compounds of iron
■C01G 51/00
Compounds of cobalt
■C01G 53/00
Compounds of nickel
■C01G 55/00
Compounds of ruthenium, rhodium, palladium, osmium, iridium, or platinum
■C01G 56/00
Compounds of transuranic elements
■C08L 1/00
Compositions of cellulose, modified cellulose, or cellulose derivatives
■C08L 3/00
Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
■C08L 5/00
Compositions of polysaccharides or of their derivatives not provided for in group 1/00 or 3/00
■C08L 11/00
Compositions of homopolymers or copolymers of chloroprene
■C08L 13/00
Compositions of rubbers containing carboxyl groups
■C08L 17/00
Compositions of reclaimed rubber
■C08L 25/00
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
■C08L 33/00
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Compositions of derivatives of such polymers
■C08L 35/00
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical, and containing at least one other carboxyl radical in the molecule, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
■C08L 39/00
Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions of derivatives of such polymers
■C08L 45/00
Compositions of homopolymers or copolymers of compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic or in a heterocyclic ring system; Compositions of derivatives of such polymers
■C08L 47/00
ompositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds; Compositions of derivatives of such polymers
■C08L 51/00
Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds
■C08L 55/00
Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups 23/00 to 53/00
■C08L 57/00
Compositions of unspecified polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
■C08L 59/00
Compositions of polyacetals; Compositions of derivatives of polyacetals
■C08L 61/00
Compositions of condensation polymers of aldehydes or ketones
■C09B 1/00
Dyes with an anthracene nucleus not condensed with any other ring
■C22C 1/00
Making alloys
■C22C 19/00
Alloys based on nickel or cobalt
■C22C 23/00
Alloys based on magnesium
■C22C 30/00
Alloys containing less than 50% by weight of each constituent
■C22C 37/00
Cast-iron alloys
■C22C 45/00
Amorphous alloys
■C23F 1/00
Etching metallic material by chemical means
■G04C 3/00
Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
■G04F 3/00
Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals with driving mechanisms, e.g. dosimeter with clockwork
■G05F 1/00
Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
■G09B 15/00
Teaching music
■G09B 19/00
Teaching not covered by other main groups of this subclass
■G09B 21/00
Teaching, or communicating with, the blind, deaf or mute
■G09B 27/00
Planetaria; Globes
■G10C 3/00
Details of, or accessories for, pianos or the like
■G10H 7/00
Instruments in which the tones are synthesised from a data store, e.g. computer organs
■G10K 15/00
Acoustics not otherwise provided for
■G10L 17/00
Speaker identification or verification
■G11B 5/00
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
■G11B 19/00
Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function
■H01B 1/00
Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
■H01B 3/00
Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
■H01B 5/00
Non-insulated conductors or conductive bodies characterised by their form
■H01B 7/00
Insulated conductors or cables characterised by their form
■H01B 9/00
Power cables
■H01B 11/00
Communication cables or conductors
■H01F 1/00
Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
■H01F 5/00
Coils
■H01H 11/00
Apparatus or processes specially adapted for the manufacture of electric switches
■H01H 13/00
Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
■H01H 19/00
Switches operated by angular displacement of the operating part thereof acted upon directly by a solid body external to the switch, e.g. by a hand, wherein this part may be turned through an unlimited or unspecified angle
■H01H 21/00
Switches operated by angular displacement of the operating part thereof acted upon directly by a solid body, e.g. by a hand, wherein this part may be turned through a restricted angle only
■H01H 25/00
Switches with compound movement of handle or other operating part
■H02J 9/00
Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
■H02J 15/00
Systems for storing electric energy
■H02K 7/00
Arrangements for handling mechanical energy structurally associated with the machine, e.g. structural association with mechanical driving motor or auxiliary dynamo-electric machine
■H02K 23/00
Dc commutator motors or generators having mechanical commutator; Universal ac/dc commutator motors
■H02K 29/00
Motors or generators having non-mechanical commutating devices, e.g. discharge tubes, semiconductor devices
■H03C 3/00
Angle modulation
■H03D 7/00
Transference of modulation from one carrier to another
■H03F 1/00
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
■H03G 1/00
Details of arrangements for controlling amplification
■H03G 3/00
Gain control in amplifiers or frequency changers
■H03G 7/00
Volume compression or expansion in amplifiers
■H03G 9/00
Combinations of two or more types of control, e.g. gain control and tone control
■H03K 5/00
Manipulating pulses not covered by one of the other main groups in this subclass
■H03K 17/00
Electronic switching or gating, i.e. not by contact-making and -breaking
■H03K 19/00
Logic circuits, i.e. having at least two inputs acting on one output
■H03K 21/00
Details of pulse counters or frequency dividers
■H03K 23/00
Pulse counters comprising counting chains; Frequency dividers comprising counting chains
■H03L 7/00
Automatic control of frequency or phase; Synchronisation
■H03M 9/00
Parallel/series conversion or vice versa
■H04B 5/00
Near-field transmission systems, e.g. inductive loop type
■H04B 11/00
ransmission systems employing ultrasonic, sonic or infrasonic waves