Assignee
ARMSTRONG CHARLES DAVID
US·7 granted patents·30 citations·filing 2008–2012
Top patents by PatentIndex Score
7 records- 0189US8486867B2Method of fracturing using mannanohydrolase enzyme breakerARMSTRONG CHARLES DAVID·Filed 2011·Granted Jul 16, 2013·8 cites·20 claims
- 0283US8517095B2Method of using hexose oxidases to create hydrogen peroxide in aqueous well treatment fluidsARMSTRONG CHARLES DAVID·Filed 2010·Granted Aug 27, 2013·4 cites·39 claims
- 0381US8844629B2Method of fracturing using alkaliphile derived enzyme breakerARMSTRONG CHARLES DAVID·Filed 2012·Granted Sep 30, 2014·4 cites·22 claims
- 0479US9090814B2Well treatment fluids containing an ylide or a vitamin B and methods of using the sameARMSTRONG CHARLES DAVID·Filed 2012·Granted Jul 28, 2015·4 cites·23 claims
- 0579US8096360B2Alkaline β-mannanase containing compositions useful for the hydrolysis of guar in high pH environments and methods related theretoARMSTRONG CHARLES DAVID·Filed 2008·Granted Jan 17, 2012·7 cites·22 claims
- 0678US8058212B2Method of fracturing using mannanohydrolase enzyme breakerARMSTRONG CHARLES DAVID·Filed 2009·Granted Nov 15, 2011·2 cites·20 claims
- 0761US8833457B2Sulfates and phosphates as allosteric effectors in mannanohydrolase enzyme breakersARMSTRONG CHARLES DAVID·Filed 2011·Granted Sep 16, 2014·1 cites·26 claims
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