- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 311/56 - Benzo [b] pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 without hydrogen atoms in position 3
Patent holdings for IPC class C07D 311/56
Total number of patents in this class: 69
10-year publication summary
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12
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12
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2
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4
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1
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2
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2
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2
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1
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0
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