Enlink Geoenergy Services, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21B EARTH OR ROCK DRILLING 591
 
  
 
F28D HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT 342

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7270182 Earth loop installed with sonic apparatusAug 18, 06Sep 18, 07[E21B]
7093657 Earth loop installed with sonic apparatusOct 10, 05Aug 22, 06[E21B]
6041862 Ground heat exchange systemJun 01, 98Mar 28, 00[F28D, E21B]
5758724 Underground heat exchange systemJan 06, 97Jun 02, 98[F28D, F21B]
5590715 Underground heat exchange systemSep 12, 95Jan 07, 97[F28D, E21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7017650 Earth loop energy systemsExpiredMar 12, 03Mar 28, 06[F28D]
6955219 Earth loop installation with sonic drillingExpiredJul 03, 03Oct 18, 05[E21B]
6860320 Bottom member and heat loopsExpiredJan 05, 04Mar 01, 05[F28B]
6694766 Power generation systems with earth heat transferExpiredAug 21, 02Feb 24, 04[F25B, F25D, F03G]
6672371 Earth heat exchange systemExpiredJan 26, 99Jan 06, 04[F28B]
2003/0221,870 Earth loop heat exchange methods and systemsAbandonedJun 01, 02Dec 04, 03[E21B]
2003/0188,666 Grout for earth heat exchange systemsAbandonedApr 09, 02Oct 09, 03[C04B]
6585036 Energy systemsExpiredAug 15, 01Jul 01, 03[F28D]
6276438 Energy systemsExpiredJun 01, 00Aug 21, 01[F28D]
6250371 Energy transfer systemsExpiredDec 12, 99Jun 26, 01[F28D]

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