Patents
US 12668756 B2: Gelling agent for calcium sulfonate greases
- Granted
- 2026-06-30
- Filed
- 2023-08-15 application 19107803
- Type
- Utility · 20 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A calcium sulfonate grease is formed from a base oil of lubricating viscosity, an oil-soluble overbased calcium sulfonate or precursors therefor, a conversion acid, water, and a gelling agent, which is selected from branched aliphatic diols with at least eight carbons, and mixtures thereof.
Source: PTBLXML, file of 2026-06-30 (ipgb20260630.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| The Lubrizol Corporation 368 patents | US company or organization | Wickcliff, OH | PTBLXML, file of 2026-06-30 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Devon K. McCune | Lyndhurst, OH | PTBLXML, file of 2026-06-30 | ||
| Gareth Fish | Munson Township, OH | 3 | PTBLXML, file of 2026-06-30 | |
| Robert Douglas Dura | Broadview Heights, OH | PTBLXML, file of 2026-06-30 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C10M | Lubricating compositions ; use of chemical substances either alone or as lubricating ingredients in a lubricating composition | C10M135/10 | PTBLXML, file of 2026-06-30 |
| C10N | Indexing scheme associated with subclass c10m relating to lubricating compositions | C10N2030/52 | PTBLXML, file of 2026-06-30 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2025-02-28 | Assignment Assignment of assignor's interest | MCCUNE, DEVON K. signed 2022-11-11 FISH, GARETH signed 2023-01-06 DURA, ROBERT DOUGLAS signed 2022-11-11 | THE LUBRIZOL CORPORATION WICKLIFFE, OH | 70363/794 | 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.