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
CA745990A
Inventor
C. Van Zijll Langhout Wouter
Van't Spijker Peter
J. F. Stijntjes Gerardus
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.)
Shell USA Inc
Original Assignee
Gerardus J F Stijntjes
Peter Van't Spijker
Wouter C Van Zijll Langhout
Shell Oil Co
Publication date
Application grantedgrantedCritical
Publication of CA745990ApublicationCriticalpatent/CA745990A/en