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Priority claimed from JP3322865Aexternal-prioritypatent/JPS4818218B1/ja
Priority claimed from DK333765AAexternal-prioritypatent/DK124410B/en
Application filed by Kureha Chemical Ind Co LtdfiledCriticalKureha Chemical Ind Co Ltd
Publication of DK138080BpublicationCriticalpatent/DK138080B/en
Application grantedgrantedCritical
Publication of DK138080CpublicationCriticalpatent/DK138080C/da