A62D 3/00 Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances (consuming noxious gases by combustion F23G7/06)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances
CPC: Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances (consuming noxious gases by combustion F23G7/06)
Full Title
Full titles differ between systems:
Processes for making harmful chemical substances harmless, or less harmful, by effecting a chemical change in the substances
Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances (consuming noxious gases by combustion F23G7/06)
Additional Content IPC
Glossary
Catalyst Substance which either increases or decreases the speed of a chemical reaction, without itself undergoing a permanent chemical change. Chalcogen Also known as chalcogenides, specifically O, S, Se, Te. Harmful Directly toxic to living organisms, with the exception of toxic to plants only. Harmful chemical substances harmful chemical substance Chemical waste substances which are too hazardous or toxic to be discarded in an ordinary municipal landfill. Halogens The elements F, Cl, Br ,I , At. Physico-chemical Having at least one chemical step and one physical step. Sludge Residue (normally viscous) from an industrial, residential, or agricultural process.
Limiting references
Detoxification of foods or foodstuffs Apparatus for chemical, physical or physico-chemical processes in general Treatment of gases, e.g. chemical or biological purification of smoke or fumes, e.g. flue gas Purification or modifying the chemical compositions of combustible gases containing carbon monoxide Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust Consuming noxious gases by combustion Chemical processes resulting in the production of a useful product, e.g. using untreated contaminated fly ash as raw material in the manufacture of cement Metals obtained from residues or scrap Treatment of radioactively-contaminated waste
Application references
Treatment of waste water, sewage or sludge Making explosives harmless by detonation
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
2 shared codes have differing titles between IPC and CPC.
IPC defines codes here since 2007.
Child Classifications
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- A62D 3/02 by biological methods, i.e. processes using enzymes or microorganisms since 2007 IPC+CPC Available in IPC and CPC
- A62D 3/10 by subjecting to electric or wave energy or particle or ionizing radiation since 2007 IPC+CPC Available in IPC and CPC
- A62D 3/20 by hydropyrolysis or destructive steam gasification, e.g. using water and heat or supercritical water, to effect chemical change since 2007 IPC+CPC Available in IPC and CPC
- A62D 3/40 by heating to effect chemical change, e.g. pyrolysis since 2007 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class A62,2013–2023, worldwide · Source: EPO PATSTAT
- SGCC(STATE GRID CORPORATION OF CHINA) 1,604
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,202
- TYCO FIRE PRODUCTS US 906
- NOHMI BOSAI 429
- LG ENERGY SOLUTION KR 414
- HOCHIKI CORPORATION 408
- HUBEI JI'ANDUN FIRE-FIGHTING TECHNOLOGY COMPANY 374
- HONEYWELL INTERNATIONAL US 355
- SINOPEC (CHINA PETROCHEMICAL CORPORATION) 346
- FISHER AND PAYKEL HEALTHCARE NZ 305
Top Applicants (CPC)
Class A62,2013–2023, worldwide · Source: EPO PATSTAT
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) US 1,384
- TYCO FIRE PRODUCTS US 962
- SGCC(STATE GRID CORPORATION OF CHINA) 662
- LG ENERGY SOLUTION KR 519
- HONEYWELL INTERNATIONAL US 427
- DRAEGER SAFETY AG & CO. KGAA DE 332
- VICTAULIC COMPANY US 294
- HILTI LI 265
- KIDDE TECHNOLOGIES US 245
- 3M INNOVATIVE PROPERTIES COMPANY (MINNESOTA MINING AND MANUFACTURING INNOVATIVE PROPERTIES COMPANY) 240