Assignee
SANWA KOKAN CO LTD
JP·2 granted patents·32 citations·filing 1984–1991
Technology mixB21C2
Top patents by PatentIndex Score
2 records- 0158US5119662AMethods for cold drawing seamless metal tubes each having an upset portion on each endSANWA KOKAN CO LTD·Filed 1991·Granted Jun 9, 1992·23 cites·3 claims
- 0242US4606212ADevice for cold drawing seamless metal tubes having upset portions on both endsSANWA KOKAN CO LTD·Filed 1984·Granted Aug 19, 1986·9 cites·9 claims
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