|  | A |
SECTION A — HUMAN NECESSITIES

HEALTH; AMUSEMENT

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

|  | A62D |
CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; 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]

|  | 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]

|  | A62D 3/00 |
Chemical means for combating harmful chemical agents; Processes for making harmful chemical agents harmless (chemical or biological purification of waste gases, e.g. smoke, fumes, flue gases, engine exhaust gases Fulltext... Hierarchy... Expanded...B01D 53/34; treatment of sewage or waste water Fulltext... Hierarchy... Expanded...C02F)

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

|  | 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)

|  | 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)