Inventor · disambiguated record

Douglas Challis

Also filed as: CHALLIS DOUGLAS

2 granted patents·2 pending applications·17 citations·filing 2005–2010

58Inventor score

Technology areasB64C

Files withCHALLIS DOUGLAS4

Top patents by PatentIndex Score

4 records

0167US8336808B2Aircraft having helicopter rotor and front mounted propellerCHALLIS DOUGLAS·Filed 2006·Granted Dec 25, 2012·12 cites·4 claims
0259US8424798B2Aircraft with helicopter rotor, thrust generator and assymetric wing configurationCHALLIS DOUGLAS·Filed 2010·Granted Apr 23, 2013·5 cites·12 claims
0331US2010258671A1Aircraft having helicopter rotor and front mounted propellerCHALLIS DOUGLAS·Filed 2006·Application pending·0 cites
0427US2007095973A1Aircraft having a helicopter rotor and an inclined front mounted propellerCHALLIS DOUGLAS·Filed 2005·Application pending·0 cites

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →