Inventor · disambiguated record
Derek Roy Oldnall
Also filed as: OLDNALL DEREK R · OLDNALL DEREK ROY
3 granted patents·14 citations·filing 1995–2013
60Inventor score
Top patents by PatentIndex Score
3 records- 0157US5579334AMethod and apparatus for reacting solid particulate reagents in an electric furnaceFiled 1995·Granted Nov 26, 1996·13 cites·25 claims
- 0248US9150939B2Method for the commercial production of ironIRON MINERAL BENEFICIATION SERVICES PROPRIETARY LTD·Filed 2013·Granted Oct 6, 2015·0 cites·10 claims
- 0345US8613787B2Method for the commercial production of ironPRETORIUS GERARD·Filed 2007·Granted Dec 24, 2013·1 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →