| 148 / | HD | METAL TREATMENT |
|
| 95 | DF | PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17} |
| 240 | DF | .~ Processes of coating utilizing a reactive composition which reacts with metal substrate or composition therefore {12} |
| 243 | DF | .~.~ Liquid reactive coating composition utilized {16} |
| 253 |  | .~.~.~ Contains phosphorus {6} |
| 254 | DF | .~.~.~.~> Liquid composition applied prior to reaction of metal substrate with phosphorus (e.g., cleaning, activating, etc.) |
| 255 | DF | .~.~.~.~> With additional coating composition containing an atom of chromium, phosphorus or sulfur |
| 256 | DF | .~.~.~.~> Specified liquid or gaseous coating composition applied after reaction with phosphorus {1} |
| 258 | DF | .~.~.~.~> Contains an atom of chromium |
| 259 | DF | .~.~.~.~> Contains organic additive other than for pH control {1} |
| 261 | DF | .~.~.~.~> Contains an atom of arsenic, boron or metal atom other than alkali metal {1} |