|  | A |
SECTION A — HUMAN NECESSITIES

HEALTH; AMUSEMENT

|  | A62 |
LIFE-SAVING; FIRE-FIGHTING (ladders Fulltext... Hierarchy... Expanded...E06C)

|  | A62D |
CHEMICAL MEANS FOR EXTINGUISHING FIRES; PROCESSES FOR MAKING HARMFUL CHEMICAL SUBSTANCES HARMLESS, OR LESS HARMFUL, BY EFFECTING A CHEMICAL CHANGE; COMPOSITION OF MATERIALS FOR COVERINGS OR CLOTHING FOR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; COMPOSITION OF MATERIALS FOR TRANSPARENT PARTS OF GAS-MASKS, RESPIRATORS, BREATHING BAGS OR HELMETS; COMPOSITION OF CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS

|  | A62D |
Note(s) Processes using enzymes or micro-organisms in order to: liberate, separate or purify a pre-existing compound or composition, or to treat textiles or clean solid surfaces of materials are further classified in subclass Fulltext... Hierarchy... Expanded...C12S. [5]

P:20 |  | A62D 1/00 |
Fire-extinguishing compositions; Use of chemical substances in extinguishing fires (fireproof paints Fulltext... Hierarchy... Expanded...C09D 5/18; fireproofing materials Fulltext... Hierarchy... Expanded...C09K 21/00)

|  | A62D 1/02 |
· | containing or yielding a gas phase, e.g. foams (Fulltext... Hierarchy... Expanded...A62D 1/06, Fulltext... Hierarchy... Expanded...A62D 1/08 take precedence) [3]

|  | A62D 1/04 |
· · | characterised by the foam stabiliser [3]

|  | A62D 1/06 |
· | containing gas-producing, chemically-reactive components [3]

|  | A62D 1/08 |
· | containing volatile or gas-charged liquids [3]

P:10 |  | 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 Fulltext... Hierarchy... Expanded...F23G 7/06) [1,]

|  | A62D 3/00 |
Note(s) This group does not cover: chemical or physico-chemical type processes where eradicating or diminishing the dangerousness of harmful chemical substances produces useful products (e.g. cement). These types of processes are covered by the appropriate subclass for making the specific product. However, in situations where processes for making products include a subset of process steps with eradicating or diminishing the dangerousness of a harmful chemical substance as its fundamental goal, and this subset is in itself novel and unobvious, this subset is covered by group Fulltext... Hierarchy... Expanded...A62D 3/00. [] In this group the following term is used with the meaning indicated: “harmful chemical substances” are chemical waste substances which are too hazardous or toxic to be discarded in an ordinary municipal landfill. [] In this group, at each hierarchical level, in the absence of an indication to the contrary, classification is made in the first appropriate place. [] In this group, it is desirable to add the indexing code(s) of group Fulltext... Hierarchy... Expanded...A62D 101/00relating to the nature of the harmful chemical substance. []

|  | A62D 3/02 |
· | by biological methods, i.e. processes using enzymes or micro-organisms []

|  | A62D 3/10 |
· | by subjecting to electric or wave energy or particle or ionizing radiation []

|  | A62D 3/11 |
· · | Electrochemical processes, e.g. electrodialysis []

|  | A62D 3/115 |
· · · | Electrolytic degradation or conversion []

|  | A62D 3/13 |
· · | to sonic energy []

|  | A62D 3/15 |
· · | to particle radiation, e.g. electron beam radiation []

|  | A62D 3/17 |
· · | to electromagnetic radiation, e.g. emitted by a laser []

|  | A62D 3/172 |
· · · | Gamma rays, i.e. radiation having a wavelength of about 0.003 to 0.03 nm []

|  | A62D 3/174 |
· · · | X-rays, i.e. radiation having a wavelength of about 0.03 to 3 nm []

|  | A62D 3/176 |
· · · | Ultraviolet radiation, i.e. radiation having a wavelength of about 3 to 400 nm []

|  | A62D 3/178 |
· · · | Microwave radiation, i.e. radiation having a wavelength of about 0.3 to 30 cm []

|  | A62D 3/19 |
· · | to plasma []

|  | A62D 3/20 |
· | by hydropyrolysis or destructive steam gasification, e.g. using water and heat to effect chemical change []

|  | A62D 3/30 |
· | by reacting with chemical agents []

|  | A62D 3/32 |
· · | by treatment in molten chemical reagent, e.g. salts or metals []

|  | A62D 3/33 |
· · | by chemically fixing the harmful substance, e.g. by chelation or complexation []

|  | A62D 3/34 |
· · | Dehalogenation using reactive chemical agents able to degrade []

|  | A62D 3/35 |
· · | by hydrolysis []

|  | A62D 3/36 |
· · | Detoxification by using acid or alkaline reagents []

|  | A62D 3/37 |
· · | by reduction, e.g. hydrogenation []

|  | A62D 3/38 |
· · | by oxidation; by combustion []

|  | A62D 3/40 |
· | by heating to effect chemical change, e.g. by pyrolysis []

P:30 |  | A62D 5/00 |
Composition of materials for coverings or clothing affording protection against harmful chemical agents

P:40 |  | A62D 7/00 |
Composition of materials for transparent parts of gas-masks, respirators, breathing bags, or helmets

|  | A62D 7/02 |
· | Clear-view sheets which prevent the formation of water drops or ice (materials for minimising adherence of ice or water to surfaces Fulltext... Hierarchy... Expanded...C09K 3/18)

P:0 |  | A62D 9/00 |
Composition of chemical substances for use in breathing apparatus (production of oxygen-generating compounds in general, processes for the production of oxygen from chemicals in general Fulltext... Hierarchy... Expanded...C01B 13/00, Fulltext... Hierarchy... Expanded...C25B 1/02)

|  | A62D 101/00 |
Indexing scheme associated with group Fulltext... Hierarchy... Expanded...A62D 3/00 relating to the nature of the harmful chemical substances

|  | A62D 101/00 |
Harmful chemical substances made harmless, or less harmful, by effecting chemical change []

|  | A62D 101/02 - A62D 101/08 |
Note(s) When indexing a substance in groups Fulltext... Hierarchy... Expanded...A62D 101/02 - Fulltext... Hierarchy... Expanded...A62D 101/08, indexing according to its chemical structure may also be made in one or more of groups Fulltext... Hierarchy... Expanded...A62D 101/20 - Fulltext... Hierarchy... Expanded...A62D 101/40. []

|  | A62D 101/02 |
· | Chemical warfare substances, e.g. cholinesterase inhibitors []

|  | A62D 101/04 |
· | Pesticides, e.g. insecticides, herbicides, fungicides or nematicides []

|  | A62D 101/06 |
· | Explosives, propellants or pyrotechnics, e.g. rocket fuel or napalm []

|  | A62D 101/08 |
· | Toxic combustion residues, e.g. toxic substances contained in fly ash from waste incineration []

|  | A62D 101/20 |
· | Organic substances []

|  | A62D 101/22 |
· · | containing halogen []

|  | A62D 101/24 |
· · | containing heavy metals []

|  | A62D 101/26 |
· · | containing nitrogen or phosphorus []

|  | A62D 101/28 |
· · | containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen []

|  | A62D 101/40 |
· | Inorganic substances []

|  | A62D 101/41 |
· · | Inorganic fibers, e.g. asbestos []

|  | A62D 101/43 |
· · | containing heavy metals, in the bonded or free state []

|  | A62D 101/45 |
· · | containing nitrogen or phosphorus []

|  | A62D 101/47 |
· · | containing oxygen, sulfur, selenium or tellurium, i.e. chalcogen []

|  | A62D 101/49 |
· · | containing halogen []