Inventor · disambiguated record
Richard James Heppenstall
Also filed as: HEPPENSTALL RICHARD J · HEPPENSTALL RICHARD JAMES
3 granted patents·52 citations·filing 1991–2007
71Inventor score
Top patents by PatentIndex Score
3 records- 0185US7300583B1Apparatus and method for remediation of a waste streamABCUSA ENVIRONMENTAL HOLDINGS·Filed 2006·Granted Nov 27, 2007·27 cites·40 claims
- 0267US7390404B2Apparatus and method for remediation of a drain systemABCUSA ENVIRONMENTAL HOLDINGS·Filed 2007·Granted Jun 24, 2008·5 cites·8 claims
- 0347US5271829ATreatment system for waste waterHEPPENSTALL RICHARD J·Filed 1991·Granted Dec 21, 1993·20 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →