Evans; Frank E.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Evans; Frank E..The latest application filed is for "fluid loss additives and methods of making and using same".

Company Profile

0.15.12

Evans; Frank E. - Bartlesville OK
Evans; Frank E. - The Woodlands TX
Evans; Frank E. - The Woodland TX
Evans; Frank E. - Knoxville TN

*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
Fluid Loss Additives and Methods of Making and Using Same App 20170145287 - Harris; Jeffery R. ; et al.	2017-05-25
Fluid loss additives and methods of making and using same Grant 9,598,627 - Harris , et al. March 21, 2	2017-03-21
Viscoelastic surfactant based wellbore fluids and methods of use Grant 9,353,306 - Svoboda , et al. May 31, 2	2016-05-31
Additives for oil-based drilling fluids Grant 9,328,280 - Bishop , et al. May 3, 2	2016-05-03
Fluid Loss Additives and Methods of Making and Using Same App 20150225638 - Harris; Jeffery R. ; et al.	2015-08-13
Fluid loss additives and methods of making and using same Grant 9,034,800 - Harris , et al. May 19, 2	2015-05-19
Viscoelastic Surfactant Based Wellbore Fluids And Methods Of Use App 20150101805 - Svoboda; Charles ; et al.	2015-04-16
Viscoelastic surfactant based wellbore fluids and methods of use Grant 8,937,034 - Svoboda , et al. January 20, 2	2015-01-20
Additives for Oil-Based Drilling Fluids App 20140336085 - BISHOP; Marshall D. ; et al.	2014-11-13
Reclamation of formate brines Grant 8,871,097 - Zhang , et al. October 28, 2	2014-10-28
Fluid loss additives and methods of making and using same Grant 8,575,072 - Harris , et al. November 5, 2	2013-11-05
Fluid Loss Additives and Methods of Making and Using Same App 20130085086 - HARRIS; Jeffery R. ; et al.	2013-04-04
Fluid Loss Additives and Methods of Making and Using Same App 20130085085 - HARRIS; Jeffery R. ; et al.	2013-04-04
Reclamation Of Formate Brines App 20110247986 - Zhang; Hui ; et al.	2011-10-13
Viscoelastic Surfactant Based Wellbore Fluids And Methods Of Use App 20100294498 - Svoboda; Charles ; et al.	2010-11-25
Delayed phase changing agent for invert emulsion drilling fluid Grant 7,152,697 - Horton , et al. December 26, 2	2006-12-26
Water based fluids comprising multivalent salts and low molecular weight, low charge cationic polyacrylamide copolymers Grant 6,855,671 - Norfleet , et al. February 15, 2	2005-02-15
Delayed phase changing agent for invert emulsion drilling fluid App 20040176255 - Horton, Robert L. ; et al.	2004-09-09
Water based fluids comprising multivalent salts and low molecular weight, low charge cationic polyacrylamide copolymers App 20030069141 - Norfleet, James E. ; et al.	2003-04-10
Wedge Type Golf Club Grant 3,862,759 - Evans , et al. January 28, 1	1975-01-28
Sand Wedge Golf Club Grant 3,719,359 - Evans , et al. March 6, 1	1973-03-06

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