Patent classifications
C
CHEMISTRY; METALLURGY
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C07
ORGANIC CHEMISTRY
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C07F
ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
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9/00
Compounds containing elements of Groups 5 or 15 of the Periodic Table
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C07F9/08
Esters of oxyacids of phosphorus
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C07F9/09
Esters of phosphoric acids
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C07F9/098
Esters of polyphosphoric acids or anhydrides
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