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.)
Expired
Application number
CA740489A
Inventor
E. Hedge Thomas
Steinkoenig Roland
L. Urbanowski Richard
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.)
Diamond Shamrock Corp
Original Assignee
Diamond Alkali Co
Publication date
Application grantedgrantedCritical
Publication of CA740489ApublicationCriticalpatent/CA740489A/en