Printhead-integrated ink level sensor with central clearing resistor
US-10532579-B2 · Jan 14, 2020 · US
This page is not indexed by search engines while we improve data quality.
Leonard Patrick patents
Leonard Patrick is listed as an inventor on 18 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Leonard Patrick |
| Total patents | 18 |
| First publication | Oct 1, 2015 |
| Latest publication | Jan 14, 2020 |
Notable patents
Publications ranked by popularity score, then publication date.
Print head sensing chamber circulation
US-10449776-B2 · Oct 22, 2019 · US
Print head sensing chamber circulation
US-2019001695-A1 · Jan 3, 2019 · US
Cartridges comprising sensors including ground electrodes exposed to fluid chambers
US-10160224-B2 · Dec 25, 2018 · US
Fluid ejection device with printhead ink level sensor
US-10155379-B2 · Dec 18, 2018 · US
Printhead-integrated ink level sensor with central clearing resistor
US-2018354271-A1 · Dec 13, 2018 · US
Print head sensing chamber circulation
US-10099484-B2 · Oct 16, 2018 · US
Cartridges comprising sensors including ground electrodes exposed to fluid chambers
US-2018015729-A1 · Jan 18, 2018 · US
Print head sensing chamber circulation
US-2017313093-A1 · Nov 2, 2017 · US
Fluid ejection device with ground electrode exposed to fluid chamber
US-9776419-B2 · Oct 3, 2017 · US
Recent patents
Latest publications not already listed above.
Fluid ejection device with integrated ink level sensor
US-9776412-B2 · Oct 3, 2017 · US
Fluid Ejection Device with Printhead Ink Level Sensor
US-2017232743-A1 · Aug 17, 2017 · US
Fluid ejection device with integrated ink level sensors
US-9707771-B2 · Jul 18, 2017 · US
Fluid ejection device with ground electrode exposed to fluid chamber
US-2017173969-A1 · Jun 22, 2017 · US
Fluid ejection device with integrated ink level sensors
US-2017036452-A1 · Feb 9, 2017 · US
Fluid ejection device with integrated ink level sensor
US-2017021626-A1 · Jan 26, 2017 · US
Fluid ejection device with integrated ink level sensor
US-9487017-B2 · Nov 8, 2016 · US
Fluid ejection device with integrated ink level sensor
US-2015273848-A1 · Oct 1, 2015 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Hewlett Packard Development Co Lp | 11 |
| Hewlett Packard Development Co | 8 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| B41J2/17566 | 16 |
| B41J2/04541 | 14 |
| B41J2/14153 | 14 |
| B41J2002/14354 | 12 |
| B41J2/0458 | 10 |