Patents
US 12275912 B2: Lubricant compositions for direct injection engine
- Granted
- 2025-04-15
- Filed
- 2023-02-13 application 18108845
- Type
- Utility · 15 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The invention is directed to a method for reducing low speed pre-ignition events in a spark-ignited direct injection internal combustion engine by supplying to the sump a lubricant composition which contains an oil of lubricating viscosity and an ashless dispersant. The ashless dispersant may be selected from succinimide compounds prepared from aliphatic or aromatic amines.
Source: PVGPATDIS, file of 2026-04-10 (ipg250415.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| The Lubrizol Corporation 368 patents | US company or organization | Wickliffe, OH | PVGPATDIS, file of 2026-04-10 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Patrick E. Mosier | Bay Village, OH | 49 | PVGPATDIS, file of 2026-04-10 | |
| Jeffry G. Dietz | Shaker Heights, OH | 13 | PVGPATDIS, file of 2026-04-10 | |
| Alexander Sammut | Chardon, OH | 9 | PVGPATDIS, file of 2026-04-10 | |
| Mary Galic Raguz | Mentor, OH | 8 | PVGPATDIS, file of 2026-04-10 | |
| Matthew D. Gieselman | Wickliffe, OH | 52 | PVGPATDIS, file of 2026-04-10 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C10M | Lubricating compositions ; use of chemical substances either alone or as lubricating ingredients in a lubricating composition | C10M169/044 | PVGPATDIS, file of 2026-04-10 |
| F02M | Supplying combustion engines in general with combustible mixtures or constituents thereof | F02M21/0215 | PVGPATDIS, file of 2026-04-10 |
| C10N | Indexing scheme associated with subclass c10m relating to lubricating compositions | C10N2010/04 | PVGPATDIS, file of 2026-04-10 |
| Y02T | Climate change mitigation technologies related to transportation | Y02T10/12 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.