Patents
US 12606771 B2: Grease composition
- Granted
- 2026-04-21
- Filed
- 2023-05-23 application 18867472
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The instant disclosure provides a grease composition containing an ash-free phosphonate ester mixture, which comprises of an ash-free phosphonate ester mixture of a cyclic phosphonate ester species and an oligomeric phosphonate ester species. The grease composition further includes a metallic soap thickener. The grease compositions disclosed herein demonstrate improved anti-wear protection under very demanding conditions and load carry.
Source: PTBLXML, file of 2026-04-21 (ipgb20260421.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| The Lubrizol Corporation 368 patents | US company or organization | Wickliffe, OH | PTBLXML, file of 2026-04-21 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Robert D. Dura | Broadview Heights, OH | 5 | PTBLXML, file of 2026-04-21 | |
| Jennifer E. Clark | Aurora, OH | 7 | PTBLXML, file of 2026-04-21 | |
| Carlos Alberto Nazario | Willoughby, OH | PTBLXML, file of 2026-04-21 | ||
| Amanda E. Freshwater | Avon, OH | PTBLXML, file of 2026-04-21 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C10M | Lubricating compositions ; use of chemical substances either alone or as lubricating ingredients in a lubricating composition | C10M169/00 | PTBLXML, file of 2026-04-21 |
| C10N | Indexing scheme associated with subclass c10m relating to lubricating compositions | C10N2030/06 | PTBLXML, file of 2026-04-21 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2024-11-20 | Assignment Assignment of assignor's interest | DURA, ROBERT D. signed 2022-10-20 CLARK, JENNIFER E. signed 2022-10-05 NAZARIO, CARLOS ALBERTO signed 2022-10-10 FRESHWATER, AMANDA E. signed 2022-12-15 | THE LUBRIZOL CORPORATION WICKLIFFE, OH | 69335/317 | PASDL, file of 2026-10-15 |
Documents recorded with the USPTO Assignment Recordation Branch that list this patent. A security interest is a lender’s claim on the patent as collateral; a release ends it.
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.