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.)
Institute of Paper Chemistry
Original Assignee
George R Sears
Johannes A Van Den Akker
Robert D Rae
Institute of Paper Chemistry
Publication date
Application grantedgrantedCritical
Publication of CA470189ApublicationCriticalpatent/CA470189A/fr