Inventor · disambiguated record
Gregory L. Hannah
Also filed as: HANNAH GREGORY · HANNAH GREGORY L
9 granted patents·2 pending applications·39 citations·filing 2001–2025
85Inventor score
Technology areasE01F
Top patents by PatentIndex Score
11 records- 0181US11136735B2Impact-resistant and energy-absorbing bollard systemSLOWSTOP GUARDING SYSTEMS LLC·Filed 2019·Granted Oct 5, 2021·5 cites·3 claims
- 0270US7621691B2Raised, longitudinal, channelizing separator systemIMPACT RECOVERY SYSTEMS INC·Filed 2007·Granted Nov 24, 2009·9 cites·5 claims
- 0366US7195422B2Recessed delineator post baseIMPACT RECOVERY SYSTEMS INC·Filed 2006·Granted Mar 27, 2007·6 cites·3 claims
- 0459USD937700SCylindrical load collar for a delineator systemIMPACT RECOVERY SYSTEMS INC·Filed 2020·Granted Dec 7, 2021·3 cites·1 claims
- 0554US2025237023A1High Speed High Performance Delineator SystemIMPACT RECOVERY SYSTEMS INC·Filed 2025·Application pending·0 cites
- 0649US12281452B2High speed high performance delineator systemIMPACT RECOVERY SYSTEMS INC·Filed 2020·Granted Apr 22, 2025·0 cites·3 claims
- 0749USD620824SPlatform barrier for visually impaired pedestriansIMPACT RECOVERY SYSTEM INC·Filed 2009·Granted Aug 3, 2010·8 cites·1 claims
- 0838USD465170STraffic delineator portable baseIMPACT RECOVERY SYSTEMS INC·Filed 2001·Granted Nov 5, 2002·4 cites·1 claims
- 0933US2013022396A1Self-Fronting Spring Assembly for a Traffic DelineatorIMPACT RECOVERY SYSTEMS INC·Filed 2010·Application pending·0 cites
- 1031USD620825SPlatform barrier for visually impaired pedestriansIMPACT RECOVERY SYSTEM INC·Filed 2009·Granted Aug 3, 2010·2 cites·1 claims
- 1131USD620823SPlatform barrier for visually impaired pedestriansIMPACT RECOVERY SYSTEM INC·Filed 2009·Granted Aug 3, 2010·2 cites·1 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →