US2580274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant
Assignee: Shell Development Co
•
Filing: 1947-03-08
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Granted: 1951-12-25
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Expires: 1967-03-08
Abstract
No abstract record available.
Inventors
- 👤 Roland F Bergstrom
- 👤 Jacobus M Plantfeber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:50
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/24; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/10; C10M2209/101; C10M2209/103; C10M2211/00; C10M2213/00; C10M2213/04; C10M2213/06; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/062; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/067; C10M2215/10; C10M2215/20; C10M2215/202; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2219/00; C10M2219/02; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/12; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2010/10; C10N2010/12; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/25; C10N2040/252; C10N2040/253; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A HEAVY-DUTY LUBRICANT HAVING THE FOLLOWING FORMULA: PERCENT WEIGHT CA SALT OF OCTYL PHENOL-FORMALDEHYDE CONDENSATION PRODUCT 0.05-6 ZN DIALKYL DITHIOCARBAMATE (OIL-SOLUBLE)- 0.1-5 CA PETROLUEM SULFONATE (OIL-SOLUBLE) 0.05-10 PHENYL ALPHA-NAPHTHYLAMINE 0.05-10 AND THE BALANCE CONSISTING ESSENTIALLY OF MINERAL LUBRICATING OIL.
Claim 2
Dependent Claim
39 words
A HEAVY-DUTY LUBRICANT HAVING THE FOLLOWING FORMULA: PERCENT WEIGHT CA SALT OF OCTYL PHENOL-FORMALDEHYDE CONDENSATION PRODUCT 0.05-6 ZN DIALKYL DITHIOCARBAMATE (OIL-SOLUBLE)- 0.1-5 CA PETROLUEM SULFONATE (OIL-SOLUBLE) 0.05-10 PHENYL ALPHA-NAPHTHYLAMINE 0.05-10 AND THE BALANCE CONSISTING ESSENTIALLY OF MINERAL LUBRICATING OIL.
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) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |