Yokoshima & Company

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL466
 
  
 
E21D SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS 115
 
  
 
G11C STATIC STORES 1150

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7056064 Block unit for repairing flow passage facilities and method of repairing flow passage facilitiesSep 26, 02Jun 06, 06[E21D]
6123109 Branch pipe lining bag and pipe lining methodJan 28, 99Sep 26, 00[F16L]
6056017 Pipe lining methodJan 27, 99May 02, 00[F16L]
5959887 Electrically erasable programmable nonvolatile semiconductor memory having dual operation functionFeb 24, 98Sep 28, 99[G11C]
5598873 Branch pipe lining method and linerMar 15, 94Feb 04, 97[F16L]
5503190 Method for repairing a tubular conduitSep 30, 93Apr 02, 96[F16L]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2004/0108,009 Method of repairing flow passageAbandonedJul 24, 03Jun 10, 04[F16L]
2004/0020,544 Pressure bag and method of lining branch pipeAbandonedApr 03, 03Feb 05, 04[F16L]
6631739 Pipe liner bag everting nozzle and pipe lining methodExpiredMay 16, 01Oct 14, 03[F16L]
6401759 Liner bag for manhole and method of lining a manholeExpiredDec 14, 99Jun 11, 02[F16L, B29C]
6296729 Method of manufacturing pipe liner bagExpiredSep 17, 99Oct 02, 01[B29C, B32B]
6254709 Method of manufacturing a pipe liner bagExpiredOct 21, 99Jul 03, 01[F16L, B32B]
6158473 Branch pipe liner bag and pipe lining methodExpiredAug 03, 99Dec 12, 00[F16L]
6152184 Branch pipe liner bag and branch pipe lining methodExpiredFeb 10, 99Nov 28, 00[F16L]
6136135 Method of manufacturing a pipe liner bagExpiredNov 20, 97Oct 24, 00[B29C]
6126030 Liner for a manhole and a method for lining a manholeExpiredMay 19, 98Oct 03, 00[B65D]
6103052 Pipe lining methodExpiredFeb 03, 98Aug 15, 00[B29C]
6085794 Pipe lining methodExpiredOct 21, 99Jul 11, 00[F16L]
6054180 Method for impregnating a tubular resin-absorbable liner with resinExpiredMar 18, 98Apr 25, 00[B05D, B32B]
6042668 Pipe liner bag and manufacturing methods thereforExpiredFeb 24, 98Mar 28, 00[B32B]
6024910 Method for lining a tubular conduitExpiredJun 05, 97Feb 15, 00[B29C]
6018914 Liner for manhole and a method for lining a manholeExpiredDec 17, 96Feb 01, 00[E04B]
6006787 Branch pipe liner bag and branch pipe lining methodExpiredFeb 10, 99Dec 28, 99[F16L]
5971031 Branch pipe liner bag and pipe lining methodExpiredOct 02, 98Oct 26, 99[F16L]
5944058 Branch pipe liner assembly and a pipe lining methodExpiredFeb 03, 98Aug 31, 99[F16L]
5916406 Branch pipe liner bag and pipe lining methodExpiredFeb 11, 97Jun 29, 99[B29C]

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