Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kureha Chemical Ind Co LtdfiledCriticalKureha Chemical Ind Co Ltd
Priority to FI136273ApriorityCriticalpatent/FI54860C/fi
Publication of FI54860BpublicationCriticalpatent/FI54860B/fi
Application grantedgrantedCritical
Publication of FI54860CpublicationCriticalpatent/FI54860C/fi