Inventor · disambiguated record
D. Drake Callahan
Also filed as: CALLAHAN D DRAKE
3 granted patents·2 citations·filing 2011–2013
55Inventor score
Technology areasG06Q
Top patents by PatentIndex Score
3 records- 0168US8341148B1Academic activity streamNEEDHAM CATHERINE·Filed 2012·Granted Dec 25, 2012·2 cites·22 claims
- 0256US9286645B2Academic activity streamAPOLLO EDUCATION GROUP INC·Filed 2013·Granted Mar 15, 2016·0 cites·20 claims
- 0348US8402020B2Academic activity streamNEEDHAM CATHERINE·Filed 2011·Granted Mar 19, 2013·0 cites·22 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →