Randal Scott Williamson has been granted 72 US patents while listed as an inventor at Lexmark International . The first was granted in 2003 and the most recent in December 2024. Randal Scott Williamson ranks #27,714 of 4,157,543 US inventors in our database (top 0.67%). Patent records list Randal Scott Williamson in Georgetown, KY, US.
Patents per Year Patents granted per year, 2003 to 2024 Bar chart with a peak of 9 patents in 2021. peak 9 2003: 2 patents 2003 2004: 1 patents 2006: 2 patents 2006 2008: 1 patents 2009: 3 patents 2009 2010: 2 patents 2012: 4 patents 2012 2013: 2 patents 2014: 2 patents 2014 2015: 4 patents 2016: 7 patents 2016 2017: 6 patents 2018: 3 patents 2018 2019: 6 patents 2020: 5 patents 2020 2021: 9 patents 2022: 9 patents 2022 2023: 3 patents 2024: 1 patents 2024 Issued Patents All Time
Showing 1–25 of 72 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
12181827 Toner cartridge latching — 2024-12-31
11720048 Toner cartridge latching — 2023-08-08
11681243 Sealing assembly for an electrophotographic image forming device Mark William Amann , Richard Louis Goin 2023-06-20
11656561 Toner container having a common input gear for a toner agitator assembly and an encoded member Virgil Johnson, Jr. 2023-05-23
11520282 Replaceable units of an electrophotographic image forming device having a shipping or storage separator Gregory Alan Cavill 2022-12-06
11385566 Sensor positioning by a replaceable unit of an image forming device Virgil Johnson, Jr. 2022-07-12
11378897 Toner container having an encoded member and an alignment guide for locating a sensor relative to the encoded member Virgil Johnson, Jr. 2022-07-05
D955472 Toner cartridge Virgil Johnson, Jr. 2022-06-21
11353824 Replaceable unit for an electrophotographic image forming device having a magnetic sensor James Richard Leemhuis 2022-06-07
11347180 Shipping or storage separator for replaceable units of an electrophotographic image forming device Gregory Alan Cavill 2022-05-31
D952030 Toner cartridge Brian Scott Carpenter , Gregory Alan Cavill , James Richard Leemhuis , Kyle Martin , Jay Scott Siekmann +2 more 2022-05-17
11287770 Toner cartridge latching — 2022-03-29
11221568 Toner container having a common input gear for a toner agitator assembly and an encoded member Virgil Johnson, Jr. 2022-01-11
11175621 Replaceable units of an electrophotographic image forming device having a shipping or storage separator Gregory Alan Cavill 2021-11-16
D936138 Toner cartridge Jay Scott Siekmann 2021-11-16
11137699 Toner container having a reduced auger flight to accommodate bi-directional rotation of the auger — 2021-10-05
11126112 Toner agitator support Brian Scott Carpenter 2021-09-21
11119443 Replaceable unit for an electrophotographic image forming device having a magnetic sensor James Richard Leemhuis 2021-09-14
11022909 Toner container having an encoded member and an alignment guide for locating a sensor relative to the encoded member Virgil Johnson, Jr. 2021-06-01
11022910 Sensor positioning by a replaceable unit of an image forming device Virgil Johnson, Jr. 2021-06-01
10983457 Sealing assembly for an electrophotographic image forming device Mark William Amann , Richard Louis Goin 2021-04-20
10921393 Magnetometer chip sensor array for reading a magnetic PUF, including a magnetic PUF film or tape, and systems incorporating the reader William Pohl Corbett, Jr. , Gary Allen Denton , James Paul Drummond , Keith Bryan Hardin , Kelly Ann Killeen 2021-02-16
10859944 Toner container having a common input gear for a toner agitator assembly and an encoded member Virgil Johnson, Jr. 2020-12-08
10775737 Replaceable unit for an electrophotographic image forming device having a magnetic sensor James Richard Leemhuis 2020-09-15
10649399 Replaceable unit for an electrophotographic image forming device having a magnetic sensor James Richard Leemhuis 2020-05-12