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.)
GCP Products UK Ltd
Original Assignee
WR Grace Ltd
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
Priority claimed from GB14992/75Aexternal-prioritypatent/GB1549847A/en
Priority claimed from CA249,984Aexternal-prioritypatent/CA1090691A/fr
Application filed by WR Grace LtdfiledCriticalWR Grace Ltd
Priority to CA353,421ApriorityCriticalpatent/CA1103141A/fr
Application grantedgrantedCritical
Publication of CA1103141ApublicationCriticalpatent/CA1103141A/fr