EZFLOW, L.P.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E02B HYDRAULIC ENGINEERING 117
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 452
 
  
 
F16L PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL268
 
  
 
B01D SEPARATION 1133
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 155
 
  
 
B23Q DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING 139
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 154
 
  
 
E21B EARTH OR ROCK DRILLING 195

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9051703 Drainage element and apparatus and method for making sameJun 22, 12Jun 09, 15[E02B]
8256990 Drainage unit with external covering and method for manufactureNov 21, 06Sep 04, 12[E02B]
8251611 Drainage element and apparatus and method for making sameNov 03, 08Aug 28, 12[E02B]
8162566 Drainage element with a periphery of different materialsDec 04, 08Apr 24, 12[E02B]
8147166 Drainage element with laminated membrane materialDec 22, 10Apr 03, 12[E02B]
8127448 Method for making drainage elementNov 05, 10Mar 06, 12[B23P]
8070949 Micro diffusion of oxygen for treatment and dispersal of wastewater in a drain fieldAug 19, 08Dec 06, 11[C02F]
8061020 Apparatus for making drainage element with a periphery of different materialsDec 04, 08Nov 22, 11[B01D]
7931423 Drainage elementFeb 05, 09Apr 26, 11[E21B]
7926510 Risers for use with access openings in wastewater treatment tanksSep 23, 08Apr 19, 11[F16L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7811030 Water drainage system for a field having a water impermeable layerExpiredJul 02, 09Oct 12, 10[E02B]
7600308 Method for making a drainage elementExpiredApr 14, 05Oct 13, 09[B23P, E02B]
2008/0267,709 Method and apparatus for coupling drainage unitsAbandonedApr 25, 07Oct 30, 08[E02B]
6988852 Drainage element for walls and septic tank systemsExpiredNov 09, 04Jan 24, 06[E02B]
6955190 Reinforcing wrap for plastic pipeExpiredNov 08, 02Oct 18, 05[F16L]
6857818 Drainage element for walls and septic tank systemsExpiredAug 02, 02Feb 22, 05[E02B]
6851454 Reinforcing support for plastic pipeExpiredFeb 10, 03Feb 08, 05[F16L]
6705800 Liquid drainage system with coverExpiredJun 11, 02Mar 16, 04[E02B]
5657527 Methods for making light-weight drainage line unitsExpiredOct 31, 95Aug 19, 97[B21D]

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