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

Introduced: September 1968

Description

H01M encompasses electrochemical energy conversion devices and processes that directly transform chemical energy into electrical energy. This subclass covers batteries, fuel cells, supercapacitors, and related electrochemical systems across all chemistries and configurations. It includes cell and battery design, electrode materials, electrolytes, manufacturing processes, performance testing, and safety features for primary, secondary (rechargeable), and specialized energy storage applications.

Additional Content IPC

Glossary

active materials, active masses, active liquids active materials active masses active liquids active material active masse active liquid materials, masses, liquids participating in the electrochemical reactions inert electrodes inert electrode electrodes characterised by their catalytic activity primary cells primary cell electrochemical generators in which the cell energy is present in chemical form and is not regenerated secondary cells secondary cell accumulators receiving and supplying electrical energy by means of reversible electrochemical reactions fuel cells fuel cell electrochemical generators wherein the reactants are supplied from outside battery batteries device comprising one or more electrochemical cells NTC PTC NTC (negative temperature coefficient) thermistors with their resistance decreasing with increasing temperature, PTC (positive temperature coefficient) thermistors with their resistance rising with increasing temperature redox flow battery redox flow batteries reversible fuel cell in which all electroactive components are dissolved in the electrolyte with a flow circulation system of the electrolyte redox fuel cell, indirect fuel cell redox fuel cell indirect fuel cell redox fuel cells indirect fuel cells fuel cell where the oxidant or fuel is not reacted directly at the electrode but with the reduced/oxidised form of a redox couple and the oxidised/reduced species are fed to cathode/anode

Limiting references

Hybrid capacitors Circuits arrangements for charging or depolarising batteries or for supplying loads from batteries

Of 12 combined children, 8 exist in both systems.

4 codes are CPC-only extensions.

Note: 4 CPC extensions are marked as secondary classification only.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01M 10/00 Secondary cells; Manufacture thereof since 1974 IPC+CPC Available in IPC and CPC
H01M 12/00 Hybrid cells; Manufacture thereof (hybrid capacitors H01G11/00) since 1974 IPC+CPC Available in IPC and CPC
H01M 14/00 Electrochemical current or voltage generators not provided for in groups H01M6/00 - H01M12/00; Manufacture thereof since 1974 +1 CPC IPC+CPC Available in IPC and CPC
H01M 16/00 Structural combinations of different types of electrochemical generators since 1974 +1 CPC IPC+CPC Available in IPC and CPC
H01M 2200/00 Safety devices for primary or secondary batteries 2nd only +3 CPC CPC only CPC only
H01M 2220/00 Batteries for particular applications 2nd only +3 CPC CPC only CPC only
H01M 2250/00 Fuel cells for particular applications; Specific features of fuel cell system 2nd only +4 CPC CPC only CPC only
H01M 2300/00 Electrolytes 2nd only +4 CPC CPC only CPC only
H01M 4/00 Electrodes since 1974 IPC+CPC Available in IPC and CPC
H01M 50/00 Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells since 2021 IPC+CPC Available in IPC and CPC
H01M 6/00 Primary cells; Manufacture thereof since 1974 +1 CPC IPC+CPC Available in IPC and CPC
H01M 8/00 Fuel cells; Manufacture thereof since 1974 +1 CPC IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 43,574
SAMSUNG ELECTRONICS COMPANY KR 42,206
LG CHEM KR 21,383
APPLIED MATERIALS US 20,441
LG ENERGY SOLUTION KR 20,279
SAMSUNG DISPLAY KR 19,725
CHINESE ACADEMY OF SCIENCES 19,400
TOYOTA MOTOR CORPORATION 18,819
SGCC(STATE GRID CORPORATION OF CHINA) 18,082
TOKYO ELECTRON JP 17,634

Top Applicants (CPC)

Class H01,2013–2023, worldwide · Source: EPO PATSTAT

SAMSUNG ELECTRONICS COMPANY KR 37,897
TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY TW 36,116
APPLIED MATERIALS US 21,640
LG ENERGY SOLUTION KR 20,770
LG CHEM KR 19,835
TOKYO ELECTRON JP 18,519
ROBERT BOSCH DE 14,595
INTEL CORPORATION US 13,580
MURATA MANUFACTURING COMPANY JP 12,151
SAMSUNG SDI COMPANY KR 12,080