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.)
Ciba Specialty Chemicals Water Treatments Ltd
Original Assignee
Allied Colloids 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 GB848420693Aexternal-prioritypatent/GB8420693D0/en
Priority claimed from GB848420695Aexternal-prioritypatent/GB8420695D0/en
Priority claimed from GB848420694Aexternal-prioritypatent/GB8420694D0/en
Priority claimed from GB858502329Aexternal-prioritypatent/GB8502329D0/en
Application filed by Allied Colloids LtdfiledCriticalAllied Colloids Ltd
Application grantedgrantedCritical
Publication of CA1241149ApublicationCriticalpatent/CA1241149A/fr