Santra; Ashok K.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Santra; Ashok K..The latest application filed is for "carbon dioxide-resistant portland based cement composition".

Company Profile

2.56.58

Santra; Ashok K. - The Woodlands TX
Santra; Ashok K. - Norman OK
Santra; Ashok K. - Duncan OK US
Santra; Ashok K - Duncan OK
Santra; Ashok K. - Dunan OK

*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
Cement compositions containing metaphosphate and methods of use Grant 10,442,975 - Patil , et al. Oc	2019-10-15
Methods for producing fluid invasion resistant cement slurries Grant 10,047,587 - Marchesini , et al. August 14, 2	2018-08-14
Carbon Dioxide-resistant Portland Based Cement Composition App 20180065891 - Santra; Ashok K. ; et al.	2018-03-08
Carbon dioxide-resistant Portland based cement composition Grant 9,850,167 - Santra , et al. December 26, 2	2017-12-26
Mitigating annular pressure buildup using temperature-activated polymeric particulates Grant 9,631,132 - Ravi , et al. April 25, 2	2017-04-25
Cement compositions and methods of using the same Grant 9,284,224 - Muthusamy , et al. March 15, 2	2016-03-15
Systems, methods, and apparatuses for in situ monitoring of cement fluid compositions and setting processes thereof Grant 9,228,940 - Pelletier , et al. January 5, 2	2016-01-05
Methods For Producing Fluid Invasion Resistant Cement Slurries App 20150284621 - Marchesini; Flavio H. ; et al.	2015-10-08
Cement Compositions Containing Metaphosphate And Methods Of Use App 20150175870 - Patil; Rahul Chandrakant ; et al.	2015-06-25
Cement compositions containing metphosphate and methods of use Grant 9,038,722 - Patil , et al. May 26, 2	2015-05-26
Cement-based particulates and methods of use Grant 9,018,147 - Luo , et al. April 28, 2	2015-04-28
Mitigating Annular Pressure Buildup Using Temperature-Activated Polymeric Particulates App 20150013988 - Ravi; Krishna M. ; et al.	2015-01-15
Zero shear viscosifying agent Grant 8,905,135 - Iverson , et al. December 9, 2	2014-12-09
Biodegradable retarder for cementing applications Grant 8,858,860 - Santra , et al. October 14, 2	2014-10-14
Cement Compositions Containing Metphosphate and Methods of Use App 20140102704 - Patil; Rahul Chandrakant ; et al.	2014-04-17
Systems and Methods for In Situ Monitoring of Cement Slurry Locations and Setting Processes Thereof App 20140076549 - Pelletier; Michael T. ; et al.	2014-03-20
Systems, Methods, and Apparatuses for In Situ Monitoring of Cement Fluid Compositions and Setting Processes Thereof App 20140076551 - Pelletier; Michael T. ; et al.	2014-03-20
Systems and Methods for Detecting Microannulus Formation and Remediation App 20140076550 - Pelletier; Michael T. ; et al.	2014-03-20
Settable compositions containing metakaolin having reduced portland cement content Grant 8,627,888 - Santra , et al. January 14, 2	2014-01-14
Zero shear viscosifying agent Grant 8,623,792 - Iverson , et al. January 7, 2	2014-01-07
Biodegradable retarder for cementing applications Grant 8,435,344 - Santra , et al. May 7, 2	2013-05-07
Carbon Dioxide-resistant Portland Based Cement Composition App 20130048284 - Santra; Ashok K. ; et al.	2013-02-28
Cement Compositions and Methods of Using the Same App 20120325478 - Muthusamy; Ramesh ; et al.	2012-12-27
Settable Compositions Containing Metakaolin Having Reduced Portland Cement Content App 20120285682 - Santra; Ashok K. ; et al.	2012-11-15
Zero Shear Viscosifying Agent App 20120238663 - Iverson; Benjamin J. ; et al.	2012-09-20
Biodegradable Retarder for Cementing Applications App 20120180698 - Santra; Ashok K. ; et al.	2012-07-19
Cement-Based Particulates and Methods of Use App 20120167803 - Luo; Hongyu ; et al.	2012-07-05
Cement-based particulates and methods of use Grant 8,183,186 - Luo , et al. May 22, 2	2012-05-22
Zero Shear Viscosifying Agent App 20110232905 - Iverson; Benjamin J. ; et al.	2011-09-29
Cement Compositions Comprising A High-density Particulate Elastomer And Associated Methods App 20110077324 - Ravi; Krishna M. ; et al.	2011-03-31
Cement compositions comprising a high-density particulate elastomer and associated methods Grant 7,878,245 - Ravi , et al. February 1, 2	2011-02-01
Swellable elastomers and associated methods Grant 7,866,393 - Badalamenti , et al. January 11, 2	2011-01-11
Sorel cement compositions, amine phosphono retarders, and associated methods Grant 7,854,262 - Santra , et al. December 21, 2	2010-12-21
Ultra low density cement compositions and methods of making same Grant 7,833,344 - Santra , et al. November 16, 2	2010-11-16
Methods of servicing wellbore with composition comprising ultra low density thermatek.RTM. slurries Grant 7,789,149 - Santra , et al. September 7, 2	2010-09-07
Swellable Elastomers and Associated Methods App 20100218949 - Badalamenti; Anthony M. ; et al.	2010-09-02
Methods of formulating a cement composition App 20100212892 - Santra; Ashok K. ; et al.	2010-08-26
Wellbore servicing compositions comprising a density segregation inhibiting composite and methods of making and using same Grant 7,740,070 - Santra , et al. June 22, 2	2010-06-22
Gas-generating additives having improved shelf lives for use in cement compositions Grant 7,722,954 - Santra , et al. May 25, 2	2010-05-25
Swellable elastomers and associated methods Grant 7,717,180 - Badalamenti , et al. May 18, 2	2010-05-18
Well system having galvanic time release plug Grant 7,699,101 - Fripp , et al. April 20, 2	2010-04-20
Sorel cement compositions, amine phosphono retarders, and associated methods App 20100089582 - Santra; Ashok K. ; et al.	2010-04-15
Methods of using wellbore sealant compositions containing cationic latexes Grant 7,694,738 - Reddy , et al. April 13, 2	2010-04-13
Wellbore sealant compositions containing cationic latexes Grant 7,687,440 - Reddy , et al. March 30, 2	2010-03-30
Methods of generating a gas in a plugging composition to improve its sealing ability in a downhole permeable zone Grant 7,642,223 - Santra , et al. January 5, 2	2010-01-05
Methods of directional drilling and forming kickoff plugs using self-degrading cement in subterranean well bores Grant 7,640,985 - Savery , et al. January 5, 2	2010-01-05
Kickoff plugs comprising a self-degrading cement in subterranean well bores Grant 7,637,319 - Savery , et al. December 29, 2	2009-12-29
Wellbore Servicing Compositions Comprising a Density Segregation Inhibiting Composite and Methods of Making and Using Same App 20090308611 - Santra; Ashok K. ; et al.	2009-12-17
Salt water stable latex cement slurries Grant 7,576,042 - Lewis , et al. August 18, 2	2009-08-18
Cement-based particulates and methods of use App 20090139719 - Luo; Hongyu ; et al.	2009-06-04
Cement compositions comprising biodegradable monomers for retarding the setting thereof Grant 7,537,656 - Santra , et al. May 26, 2	2009-05-26
Cement compositions for low temperature applications Grant 7,530,394 - Santra , et al. May 12, 2	2009-05-12
Methods of increasing the thickening times of phosphate-based cementitious compositions in high-temperature wellbores Grant 7,527,098 - Santra , et al. May 5, 2	2009-05-05
Cement Compositions Comprising a High-Density Particulate Elastomer and Associated Methods App 20090095475 - Ravi; Krishna M. ; et al.	2009-04-16
Gas-Generating Additives Having Improved Shelf Lives for Use in Cement Compositions App 20090071375 - Santra; Ashok K. ; et al.	2009-03-19
Methods of isolating zones in subterranean formations using self-degrading cement compositions Grant 7,497,258 - Savery , et al. March 3, 2	2009-03-03
Gas-generating additives having improved shelf lives for use in cement compositions Grant 7,473,313 - Santra , et al. January 6, 2	2009-01-06
Cement compositions for reducing gas or water migration and methods of using the same Grant 7,449,062 - Santra , et al. November 11, 2	2008-11-11
Cement compositions comprising aromatic sulfonated polymers and methods of using the same Grant 7,438,758 - Santra , et al. October 21, 2	2008-10-21
Methods of using cement compositions comprising phosphate compounds in subterranean formations Grant 7,407,009 - Santra , et al. August 5, 2	2008-08-05
Well system having galvanic time release plug App 20080135249 - Fripp; Michael L. ; et al.	2008-06-12
Ultra low density cement compositions and methods of making same App 20080105167 - Santra; Ashok K. ; et al.	2008-05-08
Methods of servicing wellbore with composition comprising ultra low density thermatek.RTM. slurries App 20080105428 - Santra; Ashok K. ; et al.	2008-05-08
Methods of retarding the setting of a cement composition using biodegradable monomers Grant 7,350,574 - Santra , et al. April 1, 2	2008-04-01
Cement Compositions For Reducing Gas Or Water Migration And Methods Of Using The Same App 20080070814 - Santra; Ashok K. ; et al.	2008-03-20
Zeolite compositions having enhanced compressive strength Grant 7,338,925 - Santra , et al. March 4, 2	2008-03-04
Methods of improving the shelf life of a cement composition comprising a coated gas-generating material Grant 7,334,638 - Santra , et al. February 26, 2	2008-02-26
Settable fluids comprising particle-size distribution-adjusting agents and methods of use Grant 7,328,756 - Reddy , et al. February 12, 2	2008-02-12
Cement compositions for reducing gas or water migration and methods of using the same Grant 7,325,611 - Santra , et al. February 5, 2	2008-02-05
Settable Fluids Comprising Particle-Size Distribution-Adjusting Agents and Methods of Use App 20080023200 - Reddy; B. Raghav ; et al.	2008-01-31
Swellable Elastomers and Associated Methods App 20080017376 - Badalamenti; Anthony M. ; et al.	2008-01-24
Cement compositions comprising aromatic sulfonated polymers and methods of using the same App 20080011202 - Santra; Ashok K. ; et al.	2008-01-17
Cement Compositions For Low Temperature Applications App 20080000640 - Santra; Ashok K. ; et al.	2008-01-03
Cement-free zeolite and fly ash settable fluids and methods therefor Grant 7,297,664 - Santra , et al. November 20, 2	2007-11-20
Cement compositions comprising aromatic sulfonated polymers and methods of using the same Grant 7,290,613 - Santra , et al. November 6, 2	2007-11-06
Cement compositions for reducing gas or water migration and methods of using the same App 20070209796 - Santra; Ashok K. ; et al.	2007-09-13
Salt water stable latex cement slurries App 20070203028 - Lewis; Sam ; et al.	2007-08-30
Zeolite compositions having enhanced compressive strength Grant 7,228,905 - Santra , et al. June 12, 2	2007-06-12
Methods of using wellbore sealant compositions containing cationic latexes App 20070125534 - Reddy; B. Raghava ; et al.	2007-06-07
Wellbore sealant compositions containing cationic latexes App 20070125276 - Reddy; B. Raghava ; et al.	2007-06-07
Methods of retarding the setting of a cement composition using biodegradable monomers App 20060289162 - Santra; Ashok K. ; et al.	2006-12-28
Cement compositions comprising biodegradable monomers for retarding the setting thereof App 20060288910 - Santra; Ashok K. ; et al.	2006-12-28
Gas-generating additives having improved shelf lives for use in cement compositions App 20060283357 - Santra; Ashok K. ; et al.	2006-12-21
Methods of improving the shelf life of a cement composition comprising a coated gas-generating material App 20060283595 - Santra; Ashok K. ; et al.	2006-12-21
Zeolite-containing settable spotting fluids Grant 7,150,321 - Luke , et al. December 19, 2	2006-12-19
Methods of directional drilling and forming kickoff plugs using self-degrading cement in subterranean well bores App 20060169452 - Savery; Mark R. ; et al.	2006-08-03
Methods of isolating zones in subterranean formations using self-degrading cement compositions App 20060169454 - Savery; Mark R. ; et al.	2006-08-03
Kickoff plugs comprising a self-degrading cement in subterranean well bores App 20060169453 - Savery; Mark R. ; et al.	2006-08-03
Zeolite compositions having enhanced compressive strength App 20060148657 - Santra; Ashok K. ; et al.	2006-07-06
Zeolite compositions having enhanced compressive strength App 20060137876 - Santra; Ashok K. ; et al.	2006-06-29
Methods of using cement compositions comprising phosphate compounds in subterranean formations App 20060131019 - Santra; Ashok K. ; et al.	2006-06-22
Zeolite compositions having enhanced compressive strength Grant 7,048,053 - Santra , et al. May 23, 2	2006-05-23
Biodegradable retarder for cementing applications App 20060091572 - Santra; Ashok K. ; et al.	2006-05-04
Cement compositions comprising aromatic sulfonated polymers and methods of using the same App 20060081373 - Santra; Ashok K. ; et al.	2006-04-20
Methods of generating a gas in a plugging composition to improve its sealing ability in a downhole permeable zone App 20060084580 - Santra; Ashok K. ; et al.	2006-04-20
Cement-free zeolite and fly ash settable fluids and methods therefor App 20060025312 - Santra; Ashok K. ; et al.	2006-02-02
Methods of increasing the thickening times of phosphate-based cementitious compositions in high-temperature wellbores App 20050263285 - Santra, Ashok K. ; et al.	2005-12-01
Settable fluids comprising particle-size distribution-adjusting agents and methods of use App 20050155763 - Reddy, B. Raghav ; et al.	2005-07-21
Settable fluids comprising particle-size distribution-adjusting agents and methods of use App 20050155795 - Reddy, B. Raghav ; et al.	2005-07-21
Zeolite-containing settable spotting fluids App 20040188091 - Luke, Karen ; et al.	2004-09-30
Zeolite compositions having enhanced compressive strength App 20040188092 - Santra, Ashok K. ; et al.	2004-09-30

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