Inventor · disambiguated record
Robert O. Duff
Also filed as: DUFF ROBERT CORY · DUFF ROBERT O
7 granted patents·1 pending application·59 citations·filing 2001–2022
80Inventor score
Top patents by PatentIndex Score
8 records- 0185US7976080B1Doorstop with releasably securable handleDUFF ROBERT O·Filed 2008·Granted Jul 12, 2011·20 cites·8 claims
- 0283US12252912B2Doorstop with replaceable partsDUFF ROBERT O·Filed 2022·Granted Mar 18, 2025·1 cites·20 claims
- 0381US12252927B2Mounting bracketDUFF ROBERT O·Filed 2022·Granted Mar 18, 2025·1 cites·15 claims
- 0469US6557915B1Portable doorstop with ergonomic advantagesDUFF S DOOR STOPPER·Filed 2001·Granted May 6, 2003·33 cites·14 claims
- 0567US12084900B2Doorstop with a ropeDUFF ROBERT O·Filed 2022·Granted Sep 10, 2024·0 cites·18 claims
- 0658US8960739B2Multi-functional doorstop toolDUFF ROBERT O·Filed 2011·Granted Feb 24, 2015·4 cites·14 claims
- 0747US9284765B2Combination doorbumper/doorstopperDUFF ROBERT O·Filed 2014·Granted Mar 15, 2016·0 cites·18 claims
- 0840US2004199537A1System for storing and retrieving database informationFiled 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →