Inventor · disambiguated record
Bruce A. Grifhorst
Also filed as: GRIFHORST BRUCE A
3 granted patents·1 pending application·6 citations·filing 2016–2023
58Inventor score
Top patents by PatentIndex Score
4 records- 0184US11585097B2Wheelchair ramp system using structrually insulated panel (SIPs)HEATED RAMPS LLC·Filed 2020·Granted Feb 21, 2023·3 cites·11 claims
- 0281US10801211B2Heated wheelchair ramp systemHEATED RAMPS LLC·Filed 2020·Granted Oct 13, 2020·3 cites·13 claims
- 0343US2023193633A1Heated wheelchair ramp systemHEATED RAMPS LLC·Filed 2023·Application pending·0 cites
- 0430US10588813B2Assist apparatus and systemGRIFHORST BRUCE A·Filed 2016·Granted Mar 17, 2020·0 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →