Inventor · disambiguated record
Douglas Edward Hahn
Also filed as: HAHN DOUGLAS E · HAHN DOUGLAS EDWARD
5 granted patents·1 pending application·532 citations·filing 1990–2010
86Inventor score
Top patents by PatentIndex Score
6 records- 0196US5787864AHydrogen enriched natural gas as a motor fuel with variable air fuel ratio and fuel mixture ratio controlUNIV CENTRAL FLORIDA·Filed 1996·Granted Aug 4, 1998·184 cites·9 claims
- 0294US5660602AHydrogen enriched natural gas as a clean motor fuelUNIV CENTRAL FLORIDA·Filed 1996·Granted Aug 26, 1997·113 cites·10 claims
- 0392US5666923AHydrogen enriched natural gas as a motor fuel with variable air fuel ratio and fuel mixture ratio controlUNIV CENTRAL FLORIDA·Filed 1995·Granted Sep 16, 1997·135 cites·11 claims
- 0487US5188628AClosure device for enteral fluid containersSANDOZ LTD·Filed 1990·Granted Feb 23, 1993·90 cites·11 claims
- 0539US2011232600A1Barrel-type internal combustion engine and/or piston actuated compressor with optimal piston motion for increased efficiencyHAHN DOUGLAS EDWARD·Filed 2010·Application pending·0 cites
- 0636US6077137AAnti ingestion deviceVOLVO PENTA OF THE AMERICAS IN·Filed 1999·Granted Jun 20, 2000·10 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →