Patents
US 12371631 B2: Basic ashless additives and lubricating compositions containing same
- Granted
- 2025-07-29
- Filed
- 2022-01-06 application 18269775
- Type
- Utility · 29 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The disclosed technology relates to a lubricating composition comprising an oil of lubricating viscosity and an ashless basic amine additive selected from a secondary amine containing α-carbon aromatic substitution. The basic secondary amine additives used in the lubricating oils of the disclosed technology impart basicity measured as total base number (TBN) without adding sulfated ash. Lubricating oils containing the basic secondary amine additives of the disclosed technology simultaneously achieve seals compatibility, deposit, and corrosion control.
Source: PVGPATDIS, file of 2026-04-10 (ipg250729.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 |
|---|---|---|---|---|
| Daniel J. Saccomando | Belper, GB | 31 | PVGPATDIS, file of 2026-04-10 | |
| Yanshi Zhang | Solon, OH | 36 | PVGPATDIS, file of 2026-04-10 | |
| John-Louis DiFlavio | Mentor, OH | 7 | PVGPATDIS, file of 2026-04-10 | |
| Ewan E. Delbridge | Goornong, AU | 53 | PVGPATDIS, file of 2026-04-10 | |
| William R. S. Barton | Belper, GB | 55 | 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 | C10M133/06 | PVGPATDIS, file of 2026-04-10 |
| C10N | Indexing scheme associated with subclass c10m relating to lubricating compositions | C10N2020/01 | 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.