Patent US2669560A successfully refreshed from Google Patents.
US2669560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfuration of mineral oil
Assignee: —
•
Filing: —
•
Granted: 1954-02-16
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Expires: 1971-02-16
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:50
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M101/00; C10M101/02; C10M2219/00; C10M2219/02; C10M2219/021; C10N; C10N2040/00; C10N2040/20; C10N2040/22; C10N2060/00; C10N2060/10; C10N2070/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
THE METHOD OF SULFURATING MINERAL LUBRICATING OIL WHICH COMPRISES: CONTACTING MINERAL LUBRICATING OIL IN LIQUID PHASE AT ABOUT 250-400* F. WITH ELEMENTAL SULFUR IN THE PRESENCE OF ELEMENTAL IODINE.
Claim 2
Independent Claim
29 words
THE METHOD OF SULFURATING MINERAL LUBRICATING OIL WHICH COMPRISES: CONTACTING MINERAL LUBRICATING OIL IN LIQUID PHASE AT ABOUT 250-400* F. WITH ELEMENTAL SULFUR IN THE PRESENCE OF ELEMENTAL IODINE.
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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |