Fuel additives and formulations for improving performance of gasoline direct injection engines
US-12104133-B2 · Oct 1, 2024 · US
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Stevenson Paul R patents
Stevenson Paul R is listed as an inventor on 41 patents in our database. Major assignees and classification codes are summarized below.
| Metric | Value |
|---|---|
| Inventor | Stevenson Paul R |
| Total patents | 41 |
| First publication | Feb 24, 2015 |
| Latest publication | Oct 1, 2024 |
Notable patents
Publications ranked by popularity score, then publication date.
Fuel Additives and Formulations for Improving Performance of Gasoline Direct Injection Engines
US-2024141244-A1 · May 2, 2024 · US
Low molecular weight amide/ester containing quaternary ammonium salts
US-11820957-B2 · Nov 21, 2023 · US
Low molecular weight imide containing quaternary ammonium salts
US-11781085-B2 · Oct 10, 2023 · US
Ultra-low molecular weight imide containing quaternary ammonium salts having short hydrocarbon tails
US-11254646-B2 · Feb 22, 2022 · US
Diesel detergent without a low molecular weight penalty
US-11174444-B2 · Nov 16, 2021 · US
Fuel additives
US-11124720-B2 · Sep 21, 2021 · US
Low molecular weight amide/ester containing quaternary ammonium salts
US-2021214639-A1 · Jul 15, 2021 · US
Low molecular weight imide containing quaternary ammonium salts
US-2021207051-A1 · Jul 8, 2021 · US
Quaternary ammonium amide and/or ester salts
US-10913910-B2 · Feb 9, 2021 · US
Recent patents
Latest publications not already listed above.
Ultra-low molecular weight imide containing quaternary ammonium salts having short hydrocarbon tails
US-2020361891-A1 · Nov 19, 2020 · US
Diesel Detergent Without A Low Molecular Weight Penalty
US-2020255760-A1 · Aug 13, 2020 · US
Diesel detergent without a low molecular weight penalty
US-10669496-B2 · Jun 2, 2020 · US
Quaternary Ammonium Amide And/Or Ester Salts
US-2020040271-A1 · Feb 6, 2020 · US
Fuel additives
US-2019382673-A1 · Dec 19, 2019 · US
Quaternary ammonium amide and/or ester salts
US-10479950-B2 · Nov 19, 2019 · US
Low molecular weight amide/ester containing quaternary ammonium salts
US-2019345406-A1 · Nov 14, 2019 · US
Diesel Detergent Without A Low Molecular Weight Penalty
US-2019112539-A1 · Apr 18, 2019 · US
Diesel detergent without a low molecular weight penalty
US-10202559-B2 · Feb 12, 2019 · US
Quaternary ammonium salt of a polyalkene-substituted amine compound
US-10160850-B2 · Dec 25, 2018 · US
Ultra-low molecular weight amide/ester containing quaternary ammonium salts having short hydrocarbon tails
US-2018355267-A1 · Dec 13, 2018 · US
Quaternary ammonium amide and/or ester salts
US-10023819-B2 · Jul 17, 2018 · US
Diesel detergent without a low molecular weight penalty
US-10005978-B2 · Jun 26, 2018 · US
Quaternary ammonium amide and/or ester salts
US-2017321137-A1 · Nov 9, 2017 · US
Lubricating composition containing an aromatic compound
US-9777240-B2 · Oct 3, 2017 · US
Low molecular weight amide/ester containing quaternary ammonium salts
US-2017121628-A1 · May 4, 2017 · US
Low molecular weight imide containing quaternary ammonium salts
US-2017114296-A1 · Apr 27, 2017 · US
High molecular weight imide containing quaternary ammonium salts
US-2017107438-A1 · Apr 20, 2017 · US
Epoxide quaternized quaternary ammonium salts
US-2017107441-A1 · Apr 20, 2017 · US
Coupled quaternary ammonium salts
US-2017101594-A1 · Apr 13, 2017 · US
Major assignees
Companies most often associated with this inventor's publications.
| Assignee | Patents |
|---|---|
| Lubrizol Corp | 41 |
| Stevenson Paul R | 2 |
| Moreton David J | 2 |
| Ray James C | 1 |
| Bush James H | 1 |
Top CPC classifications
Most common classification codes across this inventor's patents.
| CPC | Patents |
|---|---|
| C10L10/04 | 33 |
| C10L1/2383 | 31 |
| C10L10/18 | 29 |
| C10L2200/0259 | 28 |
| C10L1/2222 | 24 |