Inventor · disambiguated record

Dennis M. O'Callahan

Also filed as: O'CALLAHAN DENNIS · O'CALLAHAN DENNIS M

4 granted patents·11 pending applications·69 citations·filing 20022019

74Inventor score
Technology areasG06Q
Files withCHICAGO BOARD OPTIONS EXCHANGE5O'CALLAHAN DENNIS M3CHICAGO BOARD OPTIONS EXCHANGE INC2Chicago Board Options Exchange Incorporated2HIATT JR JOHN C1

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15 records

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