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.)
Nitto Denko Corp
Tokyo Gas Co Ltd
Original Assignee
Nitto Denko Corp
Tokyo Gas 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 Nitto Denko Corp, Tokyo Gas Co LtdfiledCriticalNitto Denko Corp
Priority to JP7695684UpriorityCriticalpatent/JPS60188295U/ja
Publication of JPS60188295UpublicationCriticalpatent/JPS60188295U/ja
Application grantedgrantedCritical
Publication of JPH0218876Y2publicationCriticalpatent/JPH0218876Y2/ja