Patents
US 12630780 B2: Lubricants for use in vapor-compression systems
- Granted
- 2026-05-19
- Filed
- 2022-03-30 application 18285054
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Lubricant compositions comprising an oil of lubricating viscosity and a viscosity modifier that is a hydrocarbon polymer having a number average molecular weight (Mn) of less than 10,000 Daltons (Da). The viscosity modifier is present at greater than 2 wt %, based on a total weight of the lubricant composition. Exemplary hydrocarbon polymers include, but are not limited to, olefin polymers, such as polyisobutylene polybutene, ethylene α-olefin copolymers, or combinations thereof.
Source: PTBLXML, file of 2026-05-19 (ipgb20260519.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| The Lubrizol Corporation 368 patents | US company or organization | Wickliffe, OH | PTBLXML, file of 2026-05-19 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| David M. Pallister | Highland, MI | PTBLXML, file of 2026-05-19 | ||
| Eric Schweim | Rochester Hills, MI | PTBLXML, file of 2026-05-19 | ||
| Scott Miller | Midland, MI | PTBLXML, file of 2026-05-19 | ||
| Kyle Stevens | Midland, MI | PTBLXML, file of 2026-05-19 | ||
| Arthur L. Backman | Broadview Heights, OH | PTBLXML, file of 2026-05-19 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| C10M | Lubricating compositions ; use of chemical substances either alone or as lubricating ingredients in a lubricating composition | C10M171/008 | PTBLXML, file of 2026-05-19 |
| C10N | Indexing scheme associated with subclass c10m relating to lubricating compositions | C10N2020/02 | PTBLXML, file of 2026-05-19 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2023-09-29 | Assignment Assignment of assignor's interest | PALLISTER, DAVID M signed 2021-07-06 SCHWEIM, ERIC signed 2021-07-07 MILLER, SCOTT signed 2021-07-01 STEVENS, KYLE signed 2021-07-02 BACKMAN, ARTHUR L signed 2021-07-12 | THE LUBRIZOL CORPORATION WICKLIFFE, OH | 65075/384 | 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.