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PCE
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CPC Main Group Additional Only
Y02P 20/00

Technologies relating to chemical industry

7 direct subcodes

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  • Y02P 20/20 Improvements relating to chlorine production
  • Y02P 20/30 Improvements relating to adipic acid or caprolactam production
  • Y02P 20/40 Improvements relating to fluorochloro hydrocarbon, e.g. chlorodifluoromethane [HCFC-22] production