Inventor · disambiguated record
David H. Douglas
Also filed as: DOUGLAS DAVID H
3 granted patents·2 pending applications·118 citations·filing 2000–2013
75Inventor score
Top patents by PatentIndex Score
5 records- 0190US8103520B2Method and apparatus for selecting a supplemental product to offer for sale during a transactionMUELLER RAYMOND J·Filed 2009·Granted Jan 24, 2012·48 cites·22 claims
- 0287US7542919B1Method and apparatus for selecting a supplemental product to offer for sale during a transactionWALKER DIGITAL LLC·Filed 2000·Granted Jun 2, 2009·68 cites·25 claims
- 0364US8533003B2Method and apparatus for selecting a supplemental product to offer for sale during a transactionMUELLER RAYMOND J·Filed 2012·Granted Sep 10, 2013·2 cites·18 claims
- 0450US2013339182A1Method and apparatus for selecting a supplemental product to offer for sale during a transactionWALKER DIGITAL LLC·Filed 2013·Application pending·0 cites
- 0549US2014089085A1Method and apparatus for selecting a supplemental product to offer for sale during a transactionWALKER DIGITAL HOLDINGS LLC·Filed 2013·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →