Inventor
OLDSEN JOHN G
US49 patents
⚠️ This page may combine multiple inventors who share the name “OLDSEN JOHN G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
JENNMAR CORP
25 patentsUS5511909AApr 30, 1996
Cable bolt and method of use in supporting a rock formation
JENNMAR CORP68 citations96
US5919006AJul 6, 1999
Tensionable cable bolt with mixing assembly
JENNMAR CORP57 citations95
US6612783B2Sep 2, 2003
Cable bolt with mixing delay device
JENNMAR CORP19 citations93
US5556234ASep 17, 1996
Mine roof bolt assembly
JENNMAR CORP35 citations93
US7296950B1Nov 20, 2007
Point anchor coated mine roof bolt
JENNMAR CORP22 citations92
US6322290B1Nov 27, 2001
Cable bolt head
JENNMAR CORP27 citations92
US6056482AMay 2, 2000
Cable bolt head
JENNMAR CORP25 citations92
US5954455ASep 21, 1999
Combination bolt system
JENNMAR CORP36 citations92
US5314268AMay 24, 1994
Non-metallic reinforcing rod and method of use in supporting a rock formation
JENNMAR CORP33 citations92
US5785463AJul 28, 1998
Combination cable bolt system
JENNMAR CORP32 citations91
US7566189B2Jul 28, 2009
Mine roof bolt with resin control surface
JENNMAR CORP8 citations83
US7261494B2Aug 28, 2007
Truss shoe
JENNMAR CORP10 citations80
US7073982B2Jul 11, 2006
Point anchor coated mine roof bolt
JENNMAR CORP12 citations80
US6619888B2Sep 16, 2003
Flange nut for mine roof bolt
JENNMAR CORP19 citations80
US7134810B2Nov 14, 2006
Yieldable prop having a yield section
JENNMAR CORP9 citations74
US5967703AOct 19, 1999
Mine roof support system
JENNMAR CORP15 citations74
US5957627ASep 28, 1999
Pillar cable truss system
JENNMAR CORP7 citations74
US7334968B2Feb 26, 2008
Yieldable prop
JENNMAR CORP7 citations73
US5699572ADec 23, 1997
Combination cable spreader and cable driver
JENNMAR CORP13 citations73
US7445408B2Nov 4, 2008
Yieldable prop having a restraint arrangement
JENNMAR CORP2 citations63
US7390147B2Jun 24, 2008
Yieldable prop having a yield section
JENNMAR CORP1 citations63
US7114888B2Oct 3, 2006
Yieldable prop
JENNMAR CORP6 citations63
US5836720ANov 17, 1998
Mine roof support system
JENNMAR CORP3 citations63
US5741092AApr 21, 1998
Cable bolt driver
JENNMAR CORP3 citations63
US7360971B2Apr 22, 2008
Yieldable prop
JENNMAR CORP1 citations51
FCI HOLDINGS DELAWARE INC
7 patentsUS7775754B2Aug 17, 2010
Torque nut having an injection molded breakaway insert
FCI HOLDINGS DELAWARE INC20 citations89
US8052352B2Nov 8, 2011
Mine support having a linearly moveable and/or pivoting end plate
FCI HOLDINGS DELAWARE INC11 citations78
US10036251B2Jul 31, 2018
Fiberglass roof and rib plate
FCI HOLDINGS DELAWARE INC3 citations67
US8740504B2Jun 3, 2014
Apparatus and method for re-tensioning a loose roof plate in an underground mine
FCI HOLDINGS DELAWARE INC3 citations60
US8052353B2Nov 8, 2011
System and method for mine roof counter bore and cable bolt head securement therein
FCI HOLDINGS DELAWARE INC5 citations60
US9995140B2Jun 12, 2018
Yieldable prop with yieldable insert
FCI HOLDINGS DELAWARE INC0 citations51
US8579550B2Nov 12, 2013
Truss shoe for use with a threaded rod
FCI HOLDINGS DELAWARE INC0 citations38
OLDSEN JOHN G
4 patentsUS8721227B2May 13, 2014
Yielding bolt and assembly
OLDSEN JOHN G4 citations63
US8690484B2Apr 8, 2014
Sheathed cable
OLDSEN JOHN G3 citations61
US8596923B2Dec 3, 2013
System and method for mine roof counter bore and cable bolt head securement therein
OLDSEN JOHN G3 citations58
US8539738B2Sep 24, 2013
System and method for producing resin cartridges
OLDSEN JOHN G0 citations47