Golden Dragon Precise Copper Tube Group, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 349

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9683791 Condensation enhancement heat transfer pipeDec 29, 10Jun 20, 17[F28D, F28F]
7841391 Flooded type evaporating heat-exchange copper tube for an electrical refrigeration unitDec 12, 06Nov 30, 10[F28F]
7762318 Condensing heat-exchange copper tube for an flooded type electrical refrigeration unitDec 12, 06Jul 27, 10[F28F]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0220,586 STRENGTHENED TRANSMISSION TUBES FOR FALLING FILM EVAPORATORSAbandonedJun 15, 11Aug 29, 13[F28F]
2011/0076,184 NOVEL ALUMINUM ALLOY AND PRODUTS THEREOFAbandonedJun 08, 10Mar 31, 11[C22C]
2010/0276,039 COPPER ALLOY, METHOD OF PRODUCING THE SAME, AND COPPER TUBEAbandonedApr 28, 10Nov 04, 10[C22F, C22C]

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