Inventor · disambiguated record
Johann Steyn
Also filed as: STEYN JOHANN
3 granted patents·1 pending application·6 citations·filing 2009–2012
57Inventor score
Technology areasE21D
Files withSTEYN JOHANN4
Top patents by PatentIndex Score
4 records- 0160US8696249B2Rock bolt and rock bolt componentSTEYN JOHANN·Filed 2012·Granted Apr 15, 2014·4 cites·4 claims
- 0253US8876436B2Rock boltSTEYN JOHANN·Filed 2012·Granted Nov 4, 2014·2 cites·2 claims
- 0342US2012177448A1Grout delivery system for a rock boltSTEYN JOHANN·Filed 2009·Application pending·0 cites
- 0435US8801336B2Rock boltSTEYN JOHANN·Filed 2012·Granted Aug 12, 2014·0 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →