Electric compressor, and refrigeration air-conditioning apparatus
US-2019128249-A1 · May 2, 2019 · US
Lubricant additive, lubricant composition, and working fluid composition
US12590263B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12590263-B2 |
| Application number | US-202318841790-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 20, 2023 |
| Priority date | Mar 2, 2022 |
| Publication date | Mar 31, 2026 |
| Grant date | Mar 31, 2026 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An additive for a lubricating oil containing a phosphorus compound P represented by the following formula (1): wherein R 1 and R 2 each independently represent an alkyl group having 1 to 3 carbon atoms, and n represents an integer of 0 to 3, wherein the phosphorus compound P contains a phosphorus compound P0 wherein n is 0, a phosphorus compound P1 wherein n is 1, a phosphorus compound P2 where n is 2, and a phosphorus compound P3 wherein n is 3, and a total proportion of the phosphorus compound P0 and the phosphorus 10 compound P1 in the phosphorus compound P is 60% by mole or more.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A working fluid composition comprising: the lubricating oil composition; and a refrigerant; wherein the lubricating oil composition comprises: a lubricating base oil; and a phosphorus compound P represented by the following formula (1): wherein R 1 and R 2 each independently represent an alkyl group having 1 to 3 carbon atoms, and n represents an integer of 0 to 3, wherein the phosphorus compound P comprises a phosphorus compound P0 wherein n is 0, a phosphorus compound P1 wherein n is 1, a phosphorus compound P2 where n is 2, and a phosphorus compound P3 wherein n is 3, and a total proportion of the phosphorus compound P0 and the phosphorus compound P1 in the phosphorus compound P is 60% by mole or more. 2 . The working fluid composition according to claim 1 , wherein the refrigerant is represented by the following formula (X): C a F b R c (X) wherein R represents Cl, I, or H, a represents an integer of 1 to 6, b represents an integer of 1 to 12, and c represents an integer of 0 to 11 satisfying 2a+2−b. 3 . The working fluid composition according to claim 1 , wherein the refrigerant has at least one of a chlorine atom, an iodine atom, and a carbon-carbon double bond. 4 . The working fluid composition according to claim 1 , wherein a total proportion of the phosphorus compound P1 and the phosphorus compound P2 in the phosphorus compound P is 50% by mole or more. 5 . The working fluid composition according to claim 1 , wherein a total proportion of the phosphorus compound P0, the phosphorus compound P1, and the phosphorus compound P2 in the phosphorus compound P is 92% by mole or more, and a total proportion of the phosphorus compound P1, the phosphorus compound P2, and the phosphorus compound P3 in the phosphorus compound P is 82% by mole or less.
Assignees
Inventors
Classifications
Refrigerators lubricants {or compressors lubricants} · CPC title
Phosphate esters · CPC title
containing carbon, hydrogen and halogen only · CPC title
Mixtures of base-materials and additives · CPC title
containing carbon, hydrogen and halogen only · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12590263B2 cover?
- An additive for a lubricating oil containing a phosphorus compound P represented by the following formula (1): wherein R 1 and R 2 each independently represent an alkyl group having 1 to 3 carbon atoms, and n represents an integer of 0 to 3, wherein the phosphorus compound P contains a phosphorus compound P0 wherein n is 0, a phosphorus compound P1 wherein n is 1, a…
- Who is the assignee on this patent?
- Eneos Corp
- What technology area does this patent fall under?
- Primary CPC classification C09K5/045. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 31 2026 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).