Onboard device and method for checking diesel exhaust fluid quality
US-12467395-B2 · Nov 11, 2025 · US
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Fitch Daniel patents
Fitch Daniel is listed as an inventor on 4 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Fitch Daniel |
| Total patents | 4 |
| First publication | May 27, 2021 |
| Latest publication | Nov 11, 2025 |
Notable patents
Publications ranked by popularity score, then publication date.
Onboard Device And Method For Checking DEF Quality
US-2023053630-A1 · Feb 23, 2023 · US
Method of estimating soot using a radio frequency sensor
US-11193443-B2 · Dec 7, 2021 · US
Method Of Estimating Soot Using A Radio Frequency Sensor
US-2021156327-A1 · May 27, 2021 · US
Recent patents
Latest publications not already listed above.
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Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Perkins Engines Co Ltd | 4 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| F01N11/00 | 4 |
| F01N2900/1806 | 2 |
| F01N2610/1406 | 2 |
| F01N2610/10 | 2 |
| F01N2900/1818 | 2 |