US3873456A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorus-containing compounds and lubricants containing same
Assignee: Individual
•
Filing: 1973-03-22
•
Granted: 1975-03-25
•
Expires: 1993-03-22
Abstract
Abstract Phosphorus-containing compounds are provided that impart excellent extreme pressure properties to lubricants.
Inventors
- 👤 William F Olszewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:28
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M137/105; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/657109; C07F9/657127; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/047; C10N; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
26 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICANT AND AN AMOUNT SUFFICIENT TO GIVE IMPROVED EXTREME PRESSURE PROPERTIES OF A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
26 words
A LUBRICANT COMPOSITION COMPRISING A MAJOR PROPORTION OF A LUBRICANT AND AN AMOUNT SUFFICIENT TO GIVE IMPROVED EXTREME PRESSURE PROPERTIES OF A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the compound is present at a concentration of from about 0.02 to about 10.0 percent by weight.
Claim 4
Dependent Claim
12 words
The composition of claim 1 wherein the lubricant is a lubricating oil.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the lubricant comprises a grease.
Claim 6
Dependent Claim
14 words
The composition of claim 3 wherein the lubricating oil is a mineral lubricating oil.
Claim 7
Dependent Claim
14 words
The composition of claim 3 the lubricating oil is a synthetic ester lubricating oil.
Claim 8
Dependent Claim
11 words
The composition of claim 2 wherein the compound has the formula
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |