Assignee
DOLE DOUGLAS R
US13 patents
Top patents by PatentIndex Score
US8556302B2Oct 15, 2013
Pivoting pipe coupling having a movable gripping body
DOLE DOUGLAS R85 citations98
US8517430B2Aug 27, 2013
Pipe coupling having movable gripping bodies
DOLE DOUGLAS R47 citations98
USRE44444EAug 20, 2013
Method of joining pipes in end to end relation
DOLE DOUGLAS R39 citations98
USD665889SAug 21, 2012
Pipe coupling segment
DOLE DOUGLAS R40 citations98
US8312616B2Nov 20, 2012
Method of using a pipe coupling having movable gripping bodies
DOLE DOUGLAS R37 citations96
US8177263B2May 15, 2012
Pipe coupling having movable gripping bodies
DOLE DOUGLAS R31 citations96
US8777277B2Jul 15, 2014
Pipe element having shoulder, groove and bead and methods and apparatus for manufacture thereof
DOLE DOUGLAS R34 citations94
US8820795B2Sep 2, 2014
Fitting for joining pipe elements
DOLE DOUGLAS R25 citations92
USD665061SAug 7, 2012
Pipe coupling segment
DOLE DOUGLAS R32 citations92
USD656225SMar 20, 2012
Tee fitting
DOLE DOUGLAS R27 citations89
USRE45304EDec 30, 2014
Pipe coupling having movable gripping bodies
DOLE DOUGLAS R10 citations84
USD673248SDec 25, 2012
Pipe coupling segment
DOLE DOUGLAS R11 citations84
US8302514B2Nov 6, 2012
Pipe processing device having floating drive roller
DOLE DOUGLAS R5 citations63