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.)
Coorstek KK
Original Assignee
Toshiba Ceramics 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 Toshiba Ceramics Co LtdfiledCriticalToshiba Ceramics Co Ltd
Priority to JP56075523ApriorityCriticalpatent/JPS57191292A/ja
Publication of JPS57191292ApublicationCriticalpatent/JPS57191292A/ja
Publication of JPS613316B2publicationCriticalpatent/JPS613316B2/ja