Dennistoun; Stuart M.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Dennistoun; Stuart M..The latest application filed is for "retrievable surface controlled subsurface safety valve".

Company Profile

0.14.10

Dennistoun; Stuart M. - Cypress TX
Dennistoun; Stuart M. - Carrollton TX

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Dual control line system and method for operating surface controlled sub-surface safety valve in a well Grant 7,878,252 - Smith , et al. February 1, 2	2011-02-01
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve Grant 7,775,269 - Dennistoun , et al. August 17, 2	2010-08-17
Retrievable Surface Controlled Subsurface Safety Valve App 20090294135 - Jacob; Jean-Luc ; et al.	2009-12-03
Communication Tool for Accessing a Non Annular Hydraulic Chamber of a Subsurface Safety Valve App 20090114389 - Dennistoun; Stuart M. ; et al.	2009-05-07
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve Grant 7,475,733 - Dennistoun , et al. January 13, 2	2009-01-13
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve App 20070227738 - Dennistoun; Stuart M. ; et al.	2007-10-04
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve Grant 7,249,635 - Dennistoun , et al. July 31, 2	2007-07-31
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve App 20060113081 - Dennistoun; Stuart M. ; et al.	2006-06-01
Subsurface safety valve having a communication tool accessible non annular hydraulic chamber Grant 7,032,672 - Dennistoun , et al. April 25, 2	2006-04-25
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve Grant 6,953,093 - Dennistoun , et al. October 11, 2	2005-10-11
Subsurface safety valve and method for communicating hydraulic fluid therethrough Grant 6,880,641 - Dennistoun , et al. April 19, 2	2005-04-19
Subsurface safety valve having a communication tool accessible non annular hydraulic chamber App 20050056430 - Dennistoun, Stuart M. ; et al.	2005-03-17
Communication tool for accessing a non annular hydraulic chamber of a subsurface safety valve App 20050056414 - Dennistoun, Stuart M. ; et al.	2005-03-17
Subsurface safety valve lock out and communication tool and method for use of the same Grant 6,742,595 - Dennistoun , et al. June 1, 2	2004-06-01
Subsurface safety valve and method for communicating hydraulic fluid therethrough App 20040026087 - Dennistoun, Stuart M. ; et al.	2004-02-12
Subsurface safety valve lock out and communication tool and method for use of the same Grant 6,659,185 - Dennistoun , et al. December 9, 2	2003-12-09
Subsurface safety valve lock out and communication tool and method for use of the same App 20030075336 - Dennistoun, Stuart M. ; et al.	2003-04-24
Subsurface safety valve lock out and communication tool and method for use of the same App 20030070817 - Dennistoun, Stuart M. ; et al.	2003-04-17
Subsurface safety valve lock out and communication tool and method for use of the same Grant 6,523,614 - Dennistoun , et al. February 25, 2	2003-02-25
Subsurface Safety Valve Lock Out And Communication Tool And Method For Use Of The Same App 20020153139 - Dennistoun, Stuart M. ; et al.	2002-10-24
Flapper valve assembly with seat having load bearing shoulder Grant 6,289,926 - Dennistoun September 18, 2	2001-09-18
Flapper valve with biasing flapper closure assembly Grant 6,227,299 - Dennistoun May 8, 2	2001-05-08
Flapper valve assembly with seat having load bearing shoulder Grant 6,196,261 - Dennistoun March 6, 2	2001-03-06
Underbalanced well completion Grant 6,152,232 - Webb , et al. November 28, 2	2000-11-28

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