| 1/00 | Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, C01F, in general (electrolytic production of inorganic compounds C25B 1/00) |
| 1/02 | Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, C01F, in general (electrolytic production of inorganic compounds C25B 1/00) Oxides |
| 1/04 | Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, C01F, in general (electrolytic production of inorganic compounds C25B 1/00) Carbonyls |
| 1/06 | Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, C01F, in general (electrolytic production of inorganic compounds C25B 1/00) Halides |
| 1/08 | Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, C01F, in general (electrolytic production of inorganic compounds C25B 1/00) Nitrates |
| 1/10 | Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, C01F, in general (electrolytic production of inorganic compounds C25B 1/00) Sulfates |
| 1/12 | Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, C01F, in general (electrolytic production of inorganic compounds C25B 1/00) Sulfides |
| 1/14 | Methods of preparing compounds of metals not covered by subclasses C01B, C01C, C01D, C01F, in general (electrolytic production of inorganic compounds C25B 1/00) Sulfites |
| 3/00 | Compounds of copper |
| 3/02 | Compounds of copper Oxides; Hydroxides |
| 3/04 | Compounds of copper Halides |
| 3/05 | Compounds of copper Halides Chlorides |
| 3/06 | Compounds of copper Halides Oxychlorides |
| 3/08 | Compounds of copper Nitrates |
| 3/10 | Compounds of copper Sulfates |
| 3/12 | Compounds of copper Sulfides |
| 3/14 | Compounds of copper Complexes with ammonia |
| 5/00 | Compounds of silver |
| 5/02 | Compounds of silver Halides |
| 7/00 | Compounds of gold |