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

Introduced: September 1968

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC ELEMENTS
Subclass:: SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES

Description

H01T encompasses electrical devices that generate controlled or protective electrical discharges in gases, including spark gaps for switching and overvoltage protection, ignition spark plugs for internal combustion engines, and corona discharge devices for ionization. This classification covers the design, construction, and operational principles of discharge electrodes, gap geometries, insulating materials, and triggering mechanisms used in these applications. It excludes gas discharge tubes with enclosed electrodes (covered by H01J) and arc discharge devices intended primarily for welding or cutting (covered by B23K). Typical technologies include automotive ignition systems, electrical surge protection devices, and industrial ionization equipment.

Additional Content

Glossary

Spark gap spark gaps Enclosed or non-enclosed discharge device having cold electrodes and used exclusively to discharge a quantity of electrical energy in a small time duration

Application references

Overvoltage protection circuits using a spark gap Emergency protective circuit arrangements using spark gaps ,

Related Keywords

ARC(S) extinguishing in electric spark-gapselectric spark-gap ARRESTERSnon-enclosed DISCHARGE apparatusEXTINGUISHING of arcs in spark gapsspark-gap aspects of LIGHTNING arrestersMAGNETS used for extinguishing arcs in spark gapsgenerating electric OSCILLATIONS by spark-gapsspark-gap arresterselectric SPARK(S) -gapsSPARKING-PLUGS

12 direct subcodes

Child Classifications

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H01T 1/00 Details of spark gaps
H01T 11/00 Spark gaps specially adapted as rectifiers
H01T 13/00 Sparking plugs
H01T 14/00 Spark gaps not provided for in groups
H01T 15/00 Circuits specially adapted for spark gaps, e.g. ignition circuits
H01T 19/00 Devices providing for corona discharge
H01T 2/00 Spark gaps comprising auxiliary triggering means
H01T 21/00 Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
H01T 23/00 Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
H01T 4/00 Overvoltage arresters using spark gaps
H01T 7/00 Rotary spark gaps, i.e. devices having one or more rotating electrodes
H01T 9/00 Spark gaps specially adapted for generating oscillations

Top Applicants

Top 10 applicants by patent filingsfor 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