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.)
Denka Co Ltd
Original Assignee
Denki Kagaku Kogyo KK
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 Denki Kagaku Kogyo KKfiledCriticalDenki Kagaku Kogyo KK
Priority to JP153986ApriorityCriticalpatent/JPS62158747A/ja
Priority to DE86117816Tprioritypatent/DE3688458T2/de
Priority to EP86117816Aprioritypatent/EP0230030B1/en
Priority to US06/943,696prioritypatent/US4774291A/en
Publication of JPS62158747ApublicationCriticalpatent/JPS62158747A/ja
Priority to US07/200,909prioritypatent/US4812516A/en
Publication of JPH0352783B2publicationCriticalpatent/JPH0352783B2/ja