WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

H　j　ELECTRICITY

H01　　BASIC ELECTRIC ELEMENTS

H01B　CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES

H01C　RESISTORS

H01F　MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

H01G　CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE

H01H　ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES

H01J　ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

H01K　ELECTRIC INCANDESCENT LAMPS

H01L　SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR

H01M　PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL INTO ELECTRICAL ENERGY

H01P　WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE

H01Q　AERIALS

H01R　LINE CONNECTORS; CURRENT COLLECTORS

H01S　DEVICES USING STIMULATED EMISSION

H01T　SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES

H02B　BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER

H02G　INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES

H02H　EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS

H02J　CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY

H02K　DYNAMO-ELECTRIC MACHINES

H02M　APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF

H02N　ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR

H02P　CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS

H02S　GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES

H03B　GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS

H03C　MODULATION

H03D　DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER

H03F　AMPLIFIERS

H03G　CONTROL OF AMPLIFICATION

H03H　IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS

H03J　TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS

H03K　PULSE TECHNIQUE

H03L　AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES

H03M　CODING; DECODING; CODE CONVERSION IN GENERAL

H04B　TRANSMISSION

H04H　BROADCAST COMMUNICATION

H04J　MULTIPLEX COMMUNICATION

H04K　SECRET COMMUNICATION; JAMMING OF COMMUNICATION

H04L　TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION

H04M　TELEPHONIC COMMUNICATION

H04N　PICTORIAL COMMUNICATION, e.g. TELEVISION

H04Q　SELECTING

H04R　LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS

H04S　STEREOPHONIC SYSTEMS

H04T　INDEXING SCHEME RELATING TO STANDARDS FOR ELECTRIC COMMUNICATION TECHNIQUE

H04W　WIRELESS COMMUNICATIONS NETWORKS

H05B　ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR

H05F　STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY

H05G　X-RAY TECHNIQUE

H05H　PLASMA TECHNIQUE ; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS (obtaining neutrons from radioactive sources G21, e.g. G21B, G21C, G21G); PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS

H05K　PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS