Process for refining a crude ethylene glycol stream
US-12522549-B2 · Jan 13, 2026 · US
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Watson David John patents
Watson David John is listed as an inventor on 12 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Watson David John |
| Total patents | 12 |
| First publication | Mar 29, 2018 |
| Latest publication | Jan 13, 2026 |
Notable patents
Publications ranked by popularity score, then publication date.
Process for refining a crude ethylene glycol stream
US-2023257332-A1 · Aug 17, 2023 · US
Process for the purification of ethylene glycol
US-11198664-B2 · Dec 14, 2021 · US
Process for the production of glycolic acid
US-11053186-B2 · Jul 6, 2021 · US
Process For The Production Of Glycolic Acid
US-2020239395-A1 · Jul 30, 2020 · US
Process for the purification of ethylene glycol
US-2020216377-A1 · Jul 9, 2020 · US
Process for the production of glycolic acid
US-10640443-B2 · May 5, 2020 · US
Process for the production of glycolic acid
US-2019248724-A1 · Aug 15, 2019 · US
Carbonylation process and catalyst system therefor
US-10335774-B2 · Jul 2, 2019 · US
Process for the production of glycolic acid
US-10087131-B2 · Oct 2, 2018 · US
Recent patents
Latest publications not already listed above.
Carbonylation process and catalyst system therefor
US-2018104673-A1 · Apr 19, 2018 · US
Process for the production of glycolic acid
US-2018086686-A1 · Mar 29, 2018 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Johnson Matthey Davy Technologies Ltd | 12 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C07C51/12 | 10 |
| C07C59/06 | 9 |
| C07C67/08 | 6 |
| C07C69/675 | 6 |
| C07C31/202 | 4 |