Inventor · disambiguated record
Douglas Hoffman
Also filed as: HOFFMAN DOUGLAS · HOFFMAN DOUGLAS L
5 granted patents·65 citations·filing 1975–2006
80Inventor score
Top patents by PatentIndex Score
5 records- 0177US4039153AGrinding millHOFFMAN DOUGLAS L·Filed 1976·Granted Aug 2, 1977·26 cites·10 claims
- 0276US4265057ACollet chuck aligning assembly for gem faceting machinesHOFFMAN DOUGLAS L·Filed 1980·Granted May 5, 1981·20 cites·10 claims
- 0365US7802859B2Refilling a used ink cartridgeHEWLETT PACKARD DEVELOPMENT CO·Filed 2006·Granted Sep 28, 2010·2 cites·14 claims
- 0449US4082234AMilling wheels for small flour millsHOFFMAN DOUGLAS·Filed 1977·Granted Apr 4, 1978·11 cites·9 claims
- 0536US3992821AGem faceting machine having an adjustable faceting head support assemblyHOFFMAN DOUGLAS L·Filed 1975·Granted Nov 23, 1976·6 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →