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.)
PURAKOO KK
Placo Co Ltd
Mitsubishi Kasei Corp
Original Assignee
PURAKOO KK
Placo Co Ltd
Mitsubishi Kasei Corp
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
Application filed by PURAKOO KK, Placo Co Ltd, Mitsubishi Kasei CorpfiledCriticalPURAKOO KK
Priority to JP11298975ApriorityCriticalpatent/JPS5237197A/ja
Publication of JPS5237197ApublicationCriticalpatent/JPS5237197A/ja
Publication of JPS5434387B2publicationCriticalpatent/JPS5434387B2/ja