Inventor · disambiguated record
Randal Scott Williamson
Also filed as: WILLIAMSON RANDAL · WILLIAMSON RANDAL S · WILLIAMSON RANDAL SCOTT
72 granted patents·10 pending applications·422 citations·filing 2001–2024
99Inventor score
Top patents by PatentIndex Score
82 records- 0199US9563169B1Replaceable unit for an electrophotographic image forming device having a retractable electrical connectorLEXMARK INT INC·Filed 2015·Granted Feb 7, 2017·34 cites·15 claims
- 0298US11137699B1Toner container having a reduced auger flight to accommodate bi-directional rotation of the augerLEXMARK INT INC·Filed 2021·Granted Oct 5, 2021·6 cites·10 claims
- 0398US10775737B1Replaceable unit for an electrophotographic image forming device having a magnetic sensorLEXMARK INT INC·Filed 2020·Granted Sep 15, 2020·5 cites·17 claims
- 0498US9608634B1Toothed-rack physical unclonable functionLEXMARK INT INC·Filed 2016·Granted Mar 28, 2017·11 cites·3 claims
- 0597US10527967B1Toner container having a common input gear for a toner agitator assembly and an encoded memberLEXMARK INT INC·Filed 2018·Granted Jan 7, 2020·11 cites·30 claims
- 0697US9746815B2Replaceable unit for an electrophotographic image forming device having a retractable electrical connectorLEXMARK INT INC·Filed 2016·Granted Aug 29, 2017·8 cites·34 claims
- 0796US11720048B2Toner cartridge latchingLEXMARK INT INC·Filed 2022·Granted Aug 8, 2023·2 cites·8 claims
- 0896US10649399B1Replaceable unit for an electrophotographic image forming device having a magnetic sensorLEXMARK INT INC·Filed 2019·Granted May 12, 2020·9 cites·28 claims
- 0996US10527969B1Drive actuation of a toner agitator assembly and an encoded member of a toner container in an electrophotographic image forming deviceLEXMARK INT INC·Filed 2018·Granted Jan 7, 2020·10 cites·10 claims
- 1096US10203628B1Toner agitator assemblyLEXMARK INT INC·Filed 2017·Granted Feb 12, 2019·11 cites·17 claims
- 1196US9971295B2Electrophotographic image forming device having a replaceable unit that includes a retractable electrical connectorLEXMARK INT INC·Filed 2017·Granted May 15, 2018·7 cites·18 claims
- 1296US9316944B2Toner cartridge having an alignment member for aligning with a developer unit in an electrophotographic image forming deviceLEXMARK INT INC·Filed 2015·Granted Apr 19, 2016·11 cites·9 claims
- 1396US9164425B2Toner cartridge having loading and latching featuresLEXMARK INT INC·Filed 2013·Granted Oct 20, 2015·11 cites·21 claims
- 1496US9104141B2Toner cartridge having a shutter with bypassing actuationLEXMARK INT INC·Filed 2013·Granted Aug 11, 2015·10 cites·19 claims
- 1596US8873996B1Toner system for an image forming device including a toner cartridge having a shutter with bypassing actuationLEXMARK INT INC·Filed 2013·Granted Oct 28, 2014·12 cites·13 claims
- 1695US9608828B1Elongated physical unclonable functionLEXMARK INT INC·Filed 2016·Granted Mar 28, 2017·9 cites·4 claims
- 1795US9229367B2Carriage assembly for toner cartridge loading having a pivotable cradle and a stationary hold-down featureLEXMARK INT INC·Filed 2013·Granted Jan 5, 2016·7 cites·12 claims
- 1894US11022910B2Sensor positioning by a replaceable unit of an image forming deviceLEXMARK INT INC·Filed 2020·Granted Jun 1, 2021·3 cites·19 claims
- 1994US9152083B2Carriage assembly for toner cartridge loading and latchingLEXMARK INT INC·Filed 2013·Granted Oct 6, 2015·7 cites·20 claims
- 2093US7500732B2Maintenance and docking station for a hand-held printerLEXMARK INT INC·Filed 2005·Granted Mar 10, 2009·31 cites·17 claims
- 2192US11347180B2Shipping or storage separator for replaceable units of an electrophotographic image forming deviceLEXMARK INT INC·Filed 2020·Granted May 31, 2022·2 cites·16 claims
- 2292US8567932B2Fluid container having fluid interface for micro-fluid applicationsJAMES III EDMUND H·Filed 2011·Granted Oct 29, 2013·11 cites·6 claims
- 2391US7604320B2Maintenance on a hand-held printerLEXMARK INT INC·Filed 2005·Granted Oct 20, 2009·13 cites·17 claims
- 2490US11287770B2Toner cartridge latchingLEXMARK INT INC·Filed 2020·Granted Mar 29, 2022·2 cites·22 claims
- 2590US10859944B2Toner container having a common input gear for a toner agitator assembly and an encoded memberLEXMARK INT INC·Filed 2019·Granted Dec 8, 2020·2 cites·14 claims
- 2689USRE47166EToner cartridge having loading and latching featuresLEXMARK INT INC·Filed 2017·Granted Dec 18, 2018·2 cites·21 claims
- 2788US11022909B2Toner container having an encoded member and an alignment guide for locating a sensor relative to the encoded memberLEXMARK INT INC·Filed 2020·Granted Jun 1, 2021·2 cites·24 claims
- 2886US11221568B2Toner container having a common input gear for a toner agitator assembly and an encoded memberLEXMARK INT INC·Filed 2020·Granted Jan 11, 2022·1 cites·11 claims
- 2985US11175621B2Replaceable units of an electrophotographic image forming device having a shipping or storage separatorLEXMARK INT INC·Filed 2020·Granted Nov 16, 2021·1 cites·17 claims
- 3085US10921393B2Magnetometer chip sensor array for reading a magnetic PUF, including a magnetic PUF film or tape, and systems incorporating the readerLEXMARK INT INC·Filed 2019·Granted Feb 16, 2021·4 cites·38 claims
- 3185US9983508B2Image forming device having a replaceable toner cartridge that includes an engagement member for actuating a shutterLEXMARK INT INC·Filed 2017·Granted May 29, 2018·1 cites·19 claims
- 3285US2025085657A1Toner cartridge latchingLEXMARK INT INC·Filed 2024·Application pending·0 cites
- 3383US7524051B2Hand-operated printer having a user interfaceLEXMARK INT INC·Filed 2005·Granted Apr 28, 2009·8 cites·20 claims
- 3482US12181827B2Toner cartridge latchingLEXMARK INT INC·Filed 2023·Granted Dec 31, 2024·0 cites·8 claims
- 3582USD759154SLaser printer toner cartridgeLEXMARK INT INC·Filed 2014·Granted Jun 14, 2016·26 cites·1 claims
- 3678US8348397B2Fluid height backpressure device in a system for supplying fluid to a printheadLEXMARK INT INC·Filed 2009·Granted Jan 8, 2013·5 cites·20 claims
- 3776US11656561B2Toner container having a common input gear for a toner agitator assembly and an encoded memberLEXMARK INT INC·Filed 2021·Granted May 23, 2023·0 cites·10 claims
- 3876USD759156SLaser printer toner cartridgeLEXMARK INT INC·Filed 2014·Granted Jun 14, 2016·19 cites·1 claims
- 3976US2023273549A1Sealing assembly for an electrophotographic image forming deviceLEXMARK INT INC·Filed 2023·Application pending·0 cites
- 4075US7735951B2Alignment method for hand-operated printerLEXMARK INT INC·Filed 2005·Granted Jun 15, 2010·4 cites·7 claims
- 4175US7131644B2Imaging apparatus having an automatic sheet feederLEXMARK INT INC·Filed 2004·Granted Nov 7, 2006·12 cites·6 claims
- 4274US11353824B2Replaceable unit for an electrophotographic image forming device having a magnetic sensorLEXMARK INT INC·Filed 2021·Granted Jun 7, 2022·0 cites·9 claims
- 4373US11520282B2Replaceable units of an electrophotographic image forming device having a shipping or storage separatorLEXMARK INT INC·Filed 2021·Granted Dec 6, 2022·0 cites·6 claims
- 4473US10496027B1Replaceable unit for an electrophotographic image forming device having a retractable electrical connectorLEXMARK INT INC·Filed 2019·Granted Dec 3, 2019·0 cites·34 claims
- 4573USD759155SLaser printer toner cartridgeLEXMARK INT INC·Filed 2014·Granted Jun 14, 2016·17 cites·1 claims
- 4673USD759157SLaser printer toner cartridgeLEXMARK INT INC·Filed 2014·Granted Jun 14, 2016·17 cites·1 claims
- 4772US11119443B2Replaceable unit for an electrophotographic image forming device having a magnetic sensorLEXMARK INT INC·Filed 2020·Granted Sep 14, 2021·0 cites·19 claims
- 4872US10429790B2Replaceable unit for an electrophotographic image forming device having a retractable electrical connectorLEXMARK INT INC·Filed 2018·Granted Oct 1, 2019·0 cites·16 claims
- 4971US11681243B2Sealing assembly for an electrophotographic image forming deviceLEXMARK INT INC·Filed 2021·Granted Jun 20, 2023·0 cites·8 claims
- 5071US10983457B2Sealing assembly for an electrophotographic image forming deviceLEXMARK INT INC·Filed 2019·Granted Apr 20, 2021·0 cites·8 claims
Showing the top 50 of 82 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →