SANWA KOKAN CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL120

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8210017 Steel pipe drawing apparatus and drawn steel pipe manufacturing methodJan 13, 10Jul 03, 12[B21C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5119662 Methods for cold drawing seamless metal tubes each having an upset portion on each endExpiredJan 04, 91Jun 09, 92[B21C]
4606212 Device for cold drawing seamless metal tubes having upset portions on both endsExpiredApr 13, 84Aug 19, 86[B21C]

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