Daiwa Steel Tube Industries 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 MATERIAL219
 
  
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 291
 
  
 
C23C COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 299
 
  
 
B05C APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 144
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 186
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL169

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9249489 Method and system for manufacturing metal-plated steel pipeAug 28, 09Feb 02, 16[C23C, B05C, B05D, B21C]
8444042 Method for producing steel pipe plated with metal by thermal sprayingFeb 29, 12May 21, 13[B23K, B21C]
5251804 Method for the continuous manufacture of metal-plated steel tubes by molten plating treatmentJun 24, 92Oct 12, 93[B23K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0063,887 Method for Producing Steel Pipe Plated With Metal by Thermal SprayingAbandonedNov 18, 04Mar 13, 08[B23K, B21C]
4624489 Pipe connection method and connecting structureExpiredOct 16, 84Nov 25, 86[F16L]
4541659 Permanently sealed threadless jointExpiredJul 22, 82Sep 17, 85[F16L]

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