• All sections
• C - Chemistrymetallurgy
• C01B - Non-metallic elementscompounds thereof
• C01B 25/228 - Preparation by reacting phosphate containing material with an acid, e.g. wet process with sulfuric acid, a mixture of acids mainly consisting of sulfuric acid or a mixture of compounds forming it in situ, e.g. a mixture of sulfur dioxide, water and oxygen one form of calcium sulfate being formed and then converted to another form

Patent holdings for IPC class C01B 25/228

Total number of patents in this class: 2

10-year publication summary

Principal owners for this class