US2925387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing ureido grease-thickener concentrate and lubricating greases containing same
Assignee: Standard Oil Co
•
Filing: 1958-07-21
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Granted: 1960-02-16
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Expires: 1978-07-21
Abstract
No abstract record available.
Inventors
- 👤 Traise Thornton
- 👤 Jr Wilbur L Hayne
- 👤 Kemp R Bunting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:10
CPC Classifications
C; C10; C10M; C10M115/00; C10M115/08; C07; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26; C10M2205/00; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/109; C10M2211/00; C10M2211/02; C10M2211/04; C10M2211/044; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/10; C10M2215/102; C10M2215/16; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
THE METHOD OF PREPARING A CONCENTRATE OF A LUBRICATING OIL CONTAINING AT LEAST 25% OF A UREIDO COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Independent Claim
22 words
THE METHOD OF PREPARING A CONCENTRATE OF A LUBRICATING OIL CONTAINING AT LEAST 25% OF A UREIDO COMPOUND HAVING THE GENERAL 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) | 1963-02-15 | 1963-08-17 | 1964-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-15 | 1967-08-17 | 1968-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-15 | 1971-08-17 | 1972-02-16 | $7700.00 | Window Closed / Lapsed |