Inventor · disambiguated record
David B. Playfair
Also filed as: PLAYFAIR DAVID B
14 granted patents·1 pending application·232 citations·filing 1993–2017
92Inventor score
Top patents by PatentIndex Score
15 records- 0194US6137972AImaging material dispensing systemXEROX CORP·Filed 1999·Granted Oct 24, 2000·102 cites·8 claims
- 0292USD432916SContainer end capXEROX CORP·Filed 1999·Granted Oct 31, 2000·51 cites·1 claims
- 0378US8050595B2Replenishment carrier injection systemXEROX CORP·Filed 2008·Granted Nov 1, 2011·5 cites·15 claims
- 0477US5383502AAutomatic toner dispenser lid latching and unlatching systemXEROX CORP·Filed 1993·Granted Jan 24, 1995·25 cites·4 claims
- 0573US7805099B2Teeter-totter valve for carrier replenishment systemXEROX CORP·Filed 2007·Granted Sep 28, 2010·4 cites·20 claims
- 0668US7796900B2Developer cartridge replacement scheme for electrostatographic printingXEROX CORP·Filed 2006·Granted Sep 14, 2010·3 cites·15 claims
- 0756US5552864AMagnetic seal with tapered shuntsXEROX CORP·Filed 1995·Granted Sep 3, 1996·14 cites·27 claims
- 0851US5575408AImage developer material agitation system with non-binding mixing coil agitatorXEROX CORP·Filed 1995·Granted Nov 19, 1996·12 cites·5 claims
- 0950USD422627SPlug for a toner containerXEROX CORP·Filed 1999·Granted Apr 11, 2000·7 cites·1 claims
- 1047USD832220SEarth plateXEROX CORP·Filed 2017·Granted Oct 30, 2018·4 cites·1 claims
- 1145US8622532B2Method and system for clog detection and mitigation in delivering solid-ink pellets to an imaging apparatusWAYMAN WILLIAM H·Filed 2011·Granted Jan 7, 2014·0 cites·18 claims
- 1242US6631250B2Developer filtration moduleXEROX CORP·Filed 2001·Granted Oct 7, 2003·2 cites·10 claims
- 1341US2011142498A1Replenisher toner containerXEROX CORP·Filed 2009·Application pending·0 cites
- 1440US10175631B2Earth plate with breakaway rotated tabsXEROX CORP·Filed 2017·Granted Jan 8, 2019·0 cites·20 claims
- 1536USD629447SReplenisher toner container for a xerographic machineXEROX CORP·Filed 2009·Granted Dec 21, 2010·3 cites·1 claims
Join the waitlist — get patent alerts
Get an alert when David B. Playfair files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →