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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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Filing date
Publication date
Application filed by Matsushita Electric Industrial Co LtdfiledCriticalMatsushita Electric Industrial Co Ltd
Priority to JP8018776ApriorityCriticalpatent/JPS535442A/en
Publication of JPS535442ApublicationCriticalpatent/JPS535442A/en
PURPOSE: To enhance thermal efficiency with preventing deterioration of electrical insulating performance by moisture absorption of a filler in a sheathed heater held by insulating hot wire in a pipe by the filler.