Inventor · disambiguated record
Joseph A. Seyfried
Also filed as: SEYFRIED JOSEPH A
6 granted patents·82 citations·filing 1988–2019
82Inventor score
Top patents by PatentIndex Score
6 records- 0182US5150807AApparatus for storing marking particlesXEROX CORP·Filed 1991·Granted Sep 29, 1992·36 cites·7 claims
- 0271US5146279AActive airflow system for development apparatusXEROX CORP·Filed 1991·Granted Sep 8, 1992·20 cites·24 claims
- 0369US4891674ARetractable development apparatusXEROX CORP·Filed 1988·Granted Jan 2, 1990·17 cites·14 claims
- 0458US11083286B2Stand and system for assisting visual perceptionASS FOR THE BLIND AND VISUALLY IMPAIRED·Filed 2019·Granted Aug 10, 2021·3 cites·15 claims
- 0536US5078086ADeveloper unit having an indexable magnetXEROX CORP·Filed 1988·Granted Jan 7, 1992·4 cites·12 claims
- 0627US5250993AConnection between movable developer unit and stationary toner reservoirXEROX CORP·Filed 1991·Granted Oct 5, 1993·2 cites·8 claims
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →