Inventor · disambiguated record
Robert E. Fergen
Also filed as: FERGEN ROBERT E
2 granted patents·116 citations·filing 1992–1997
69Inventor score
Technology areasC02F
Top patents by PatentIndex Score
2 records- 0179US5385673AMethod of treating wastewater biosolidsHAZEN AND SAWYER P C·Filed 1992·Granted Jan 31, 1995·67 cites·9 claims
- 0273US5916448AChemical conditioning of liquid and semi-liquid sludge for dewatering, odor control, pathogen control, nutrient enhancement of the residual, and handling characteristicsHAZEN & SAWYER P C·Filed 1997·Granted Jun 29, 1999·49 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →