Did You Know...
...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7270182 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 09/18/2007 |
| 7093657 | Earth loop installed with sonic apparatus A method for installing a heat exchange pipe loop in a borehole, the method, in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill apparatus on a lower end of the casing movable by th... | 08/22/2006 |
| 7017650 | Earth loop energy systems Wellbore heat loop systems, fillers for bores in the systems, and methods of the use of such systems; the systems in certain aspects having a heat loop wellbore in the earth having heat loop pipe extending down to one side of a bottom member and up therefrom on anot... | 03/28/2006 |
| 6955219 | Earth loop installation with sonic drilling A method for installing a heat exchange pipe loop in a borehole, the method in at least certain aspects, including drilling a borehole with a sonic drill system having a head and casing connected thereto, a drill shoe on a lower end of the casing movable by the soni... | 10/18/2005 |
| 6860320 | Bottom member and heat loops Bottom members for a heat loop for an earth energy transfer system with a moving energy transfer fluid and heat loops with such a bottom member; the bottom member in one aspect including a body with a top surface and a bottom surface, the body configured for connect... | 03/01/2005 |
| 6694766 | Power generation systems with earth heat transfer A system for increasing efficiency of a closed-earth-loop heat pump system; for increasing heat pump efficiency by feeding relatively colder water to heat pumps when they operate in a cooling mode; and, in certain aspects, systems for using excess produce... | 02/24/2004 |
| 6672371 | Earth heat exchange system An earth wellbore heat loop system has been developed which has, in certain aspects, a heat loop wellbore in the earth extending from an earth surface down into the earth to a bottom of the wellbore, a heat loop disposed in the heat loop wellbore and exte... | 01/06/2004 |
| 6585036 | Energy systems An earth energy transfer system with a moving energy transfer fluid, the system for transferring energy for an entity, the system, in certain aspects, having apparatus and related items for measuring an amount of energy transferred for the entity to or fr... | 07/01/2003 |
| 6250371 | Energy transfer systems An earth energy loop transfer system with a moving energy transfer fluid, the system for transferring energy for an entity, the system having means for measuring an amount of energy transferred for the entity to or from the moving energy transfer fluid, a... | 06/26/2001 |
| 5758724 | Underground heat exchange system The present invention discloses a system and method for simultaneously installing a pipe loop and a grout pipe in a wellbore. In another aspect such a system is then used to grout the wellbore by releasing the grout pipe from the pipe loop or from a botto... | 06/02/1998 |
