Assignee

BURRIS JOHN E

US·1 granted patent·1 pending application·0 citations·filing 2008–2011

Technology mixE21B2

Top patents by PatentIndex Score

2 records

0134US9151139B2Method of reducing deflection through a rod piston in a subsurface safety valveBURRIS JOHN E·Filed 2011·Granted Oct 6, 2015·0 cites·18 claims
0229US2009236099A1Multiple Spring Subsurface Safety ValveBURRIS JOHN E·Filed 2008·Application pending·0 cites

Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →