ข้อมูลสัญลักษณ์จำแนกการออกแบบผลิตภัณฑ์ระหว่างประเทศ


รหัส / code คำอธิบาย / code name Version
C23C0008320000 of ferrous surfaces 1
C23C0008340000 more than one element being applied in more than one step 1
C23C0008360000 using ionised gases, e.g. ionitriding (discharge tubes with provision for introducing objects or material to be exposed to the discharge H01J0037000000) 1
C23C0008380000 Treatment of ferrous surfaces 1
C23C0008400000 using liquids, e.g. salt baths, liquid suspensions 1
C23C0008420000 only one element being applied 1
C23C0008440000 Carburising 1
C23C0008460000 of ferrous surfaces 1
C23C0008480000 Nitriding 1
C23C0008500000 of ferrous surfaces 1
C23C0008520000 more than one element being applied in one step 1
C23C0008540000 Carbo-nitriding 1
C23C0008560000 of ferrous surfaces 1
C23C0008580000 more than one element being applied in more than one step 1
C23C0008600000 using solids, e.g. powders, pastes (using liquid suspensions of solids C23C0008400000) 1