|
| US4449584 | 12 Aug 1982 | 22 May 1984 | | Inflatable flowing hole plug |
| US5540280 | 15 Aug 1994 | 30 Jul 1996 | Halliburton Company | Early evaluation system |
| US5555945 | 15 Aug 1994 | 17 Sep 1996 | Halliburton Company | Early evaluation by fall-off testing |
| US5799733 | 30 Sep 1997 | 1 Sep 1998 | Halliburton Energy Services, Inc. | Early evaluation system with pump and method of servicing a well |
| US6009951 | 12 Dec 1997 | 4 Jan 2000 | Baker Hughes Incorporated | Method and apparatus for hybrid element casing packer for cased-hole applications |
| US6148912 | 16 Mar 1998 | 21 Nov 2000 | Dresser Industries, Inc. | Subsurface measurement apparatus, system, and process for improved well drilling control and production |
| US6189612 | 1 Feb 2000 | 20 Feb 2001 | Dresser Industries, Inc. | Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| US6296056 | 19 Jul 2000 | 2 Oct 2001 | Dresser Industries, Inc. | Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| US6427785 | 21 Sep 2001 | 6 Aug 2002 | | Subsurface measurement apparatus, system, and process for improved well drilling, control, and production |
| US6446669 | 4 Jan 2001 | 10 Sep 2002 | | Pipe sealing apparatus |
| US6568429 | 3 Jan 2002 | 27 May 2003 | | Pipe sealing apparatus |
| US6901966 | 12 Dec 2003 | 7 Jun 2005 | Bridgestone Corporation | Seal device for tubular member |
| US7455077 | 10 Jan 2007 | 25 Nov 2008 | | Inflatable plug with flange |
| US7588053 | 27 Oct 2008 | 15 Sep 2009 | | Inflatable plug with flange |