Description: 556 organic compounds -- part of the class 532-570 series / 556 organic compounds -- part of the class 532-570 series/() organic compounds (class 532, subclass 1) (1) heavy metal containing (e.g., ga, in or t1, etc.) (13) phosphorus containing (24) exactly four chalcogens bonded directly to the phosphorus (e.g., phosphates, orthophosphates, etc.) (25) at least two of the chalcogens are sulfur (e.g., zinc dihydrocarbyl dithiophosphates, etc.)
Hierarchy/Derived subclasses
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Patent Apps in 556/25
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