US2562845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anticorrosion composition
Assignee: Shell Development Co
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Filing: 1947-12-12
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Granted: 1951-07-31
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Expires: 1967-12-12
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Reamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:40
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2431; C10L1/2437; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/289; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/12; C10M2211/00; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/06; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A NON-AQUEOUS OIL COMPOSITION WHICH COMPRISES A HYDROCARBON OIL AND A MINOR BUT EFFECRIVE CORROSION-INHIBITING AMOUNT OF AN UNSUBSTITUTED ALKYLATED FUSED-POLYCYCLIC SULFONATE CONSISTING ESSENTIALLY OF A TETRALIN NUCLEUS AND, ATTACHED TO SAID NUCLEUS, 1 ALKYL RADICAL OF FROM ABOUT 18 TO ABOUT 30 CARBON ATOMS AND FROM 1 TO 3, INCLUSIVE, METALLIC SULFONATE GROUPS.
Claim 2
Dependent Claim
54 words
A NON-AQUEOUS OIL COMPOSITION WHICH COMPRISES A HYDROCARBON OIL AND A MINOR BUT EFFECRIVE CORROSION-INHIBITING AMOUNT OF AN UNSUBSTITUTED ALKYLATED FUSED-POLYCYCLIC SULFONATE CONSISTING ESSENTIALLY OF A TETRALIN NUCLEUS AND, ATTACHED TO SAID NUCLEUS, 1 ALKYL RADICAL OF FROM ABOUT 18 TO ABOUT 30 CARBON ATOMS AND FROM 1 TO 3, INCLUSIVE, METALLIC SULFONATE GROUPS.
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) | 1954-07-30 | 1955-01-29 | 1955-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-30 | 1959-01-29 | 1959-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-30 | 1963-01-29 | 1963-07-31 | $7700.00 | Window Closed / Lapsed |