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 IT21790/78ApriorityCriticalpatent/IT1095379B/it
Publication of IT7821790A0publicationCriticalpatent/IT7821790A0/it
Application grantedgrantedCritical
Publication of IT1095379BpublicationCriticalpatent/IT1095379B/it