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.)
Risho Kogyo Co Ltd
Resonac Holdings Corp
Original Assignee
Showa Denko KK
Risho Kogyo Co 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
Application filed by Showa Denko KK, Risho Kogyo Co LtdfiledCriticalShowa Denko KK
Priority to JP4045681ApriorityCriticalpatent/JPH0228911B2/en
Publication of JPS57155794ApublicationCriticalpatent/JPS57155794A/en
Publication of JPH0228911B2publicationCriticalpatent/JPH0228911B2/en