Hejl; David A.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Hejl; David A..The latest application filed is for "extendable probe and formation testing tool and method".

Company Profile

2.9.9

Hejl; David A. - Houston TX
Hejl; David A. - Dallas 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
Extendable probe and formation testing tool and method Grant 10,316,657 - Paramhans , et al.	2019-06-11
Apparatus and method for obtaining formation fluid samples Grant 9,790,789 - Hejl , et al. October 17, 2	2017-10-17
Extendable Probe And Formation Testing Tool And Method App 20160237817 - Paramhans; Shiva ; et al.	2016-08-18
Apparatus And Method For Obtaining Formation Fluid Samples App 20140174169 - Hejl; David A. ; et al.	2014-06-26
Bi-directional fluid loss device and method Grant 7,252,153 - Hejl , et al. August 7, 2	2007-08-07
Apparatus and method for treating an interval of a wellbore Grant 7,243,724 - McGregor , et al. July 17, 2	2007-07-17
Bi-directional fluid loss device App 20060169465 - Hejl; David A. ; et al.	2006-08-03
Apparatus and method for treating an interval of a wellbore App 20050103494 - McGregor, Ronald W. ; et al.	2005-05-19
Gravel packing apparatus having an integrated joint connection and method for use of same Grant 6,814,139 - Hejl , et al. November 9, 2	2004-11-09
Apparatus and method for gravel packing an interval of a wellbore Grant 6,789,624 - McGregor , et al. September 14, 2	2004-09-14
Gravel packing apparatus having an integrated joint connection and method for use of same App 20040074641 - Hejl, David A. ; et al.	2004-04-22
Apparatus and method for gravel packing an interval of a wellbore App 20030221828 - McGregor, Ronald W. ; et al.	2003-12-04
Transition member for maintaining fluid slurry velocity therethrough and method for use of same App 20030183386 - McGregor, Ronald W. ; et al.	2003-10-02
Apparatus and method for gravel packing an interval of a wellbore Grant 6,516,882 - McGregor , et al. February 11, 2	2003-02-11

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