Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Orkem SA
Original Assignee
Chimique des Charbonnages SA
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 Chimique des Charbonnages SAfiledCriticalChimique des Charbonnages SA
Priority to FR7119557ApriorityCriticalpatent/FR2139664A2/fr
Publication of FR2139664A2publicationCriticalpatent/FR2139664A2/fr
Application grantedgrantedCritical
Publication of FR2139664B2publicationCriticalpatent/FR2139664B2/fr