Preparing Inorganic Compound Patents (Class 205/464)
- Carbon containing (Class 205/478)
- Chromium containing (Class 205/483)
- Phosphorus containing (Class 205/488)
- Nitrogen containing (Class 205/491)
- Sulfur containing (e.g., sulfide, etc.) (Class 205/494)
- Halogen containing (Class 205/498)
- Hydroxide (Class 205/508)
- Oxide (Class 205/538)
- Hydrate (Class 205/546)
- Germanium, tin, or lead containing (Class 205/547)
- Iron, cobalt, or nickel containing (Class 205/548)