Patents
US 9309480 B2: Lubricant composition comprising anti-foam agents
- Granted
- 2016-04-12
- Filed
- 2012-01-26 application 13982285
- Type
- Utility · 17 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
The disclosed invention relates to a multigrade lubricant composition which can be used for numerous lubricant applications, but is particularly useful for lubricating a diesel engine. The lubricant composition comprises an oil of lubricating viscosity, a detergent, a dispersant, a viscosity index improver, and a combination of anti-foam agents. The lubricant composition may be used for providing enhanced fuel economy and avoiding air entrainment problems when used in lubricating diesel engines.
Source: PVGPATDIS, file of 2026-04-10 (ipg160412.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 |
|---|---|---|---|---|
| John G. Loop | Logan, OH | 4 | PVGPATDIS, file of 2026-04-10 | |
| William D. Abraham | Greenville, OH | 13 | 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 | C10M139/04 | PVGPATDIS, file of 2026-04-10 |
| C10N | Indexing scheme associated with subclass c10m relating to lubricating compositions | C10N2020/02 | PVGPATDIS, file of 2026-04-10 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
| Recorded | What | From | To | Reel/frame | Source |
|---|---|---|---|---|---|
| 2013-10-01 | Assignment Assignment of assignor's interest | ABRAHAM, WILLIAM D. signed 2013-08-23 LOOP, JOHN G. signed 2013-08-26 | THE LUBRIZOL CORPORATION WICKLIFFE, OH | 31318/997 | ECORSEXC, file of 2026-09-25 |
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.