US2629676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitors
Assignee: Lubrizol Corp
•
Filing: 1949-09-02
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Granted: 1953-02-24
•
Expires: 1969-09-02
Abstract
No abstract record available.
Inventors
- 👤 Carl F Prutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:32
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/20; C10M2219/00; C10M2219/04; C10M2219/042; C10M2219/044; C10M2223/00; C10M2223/06; C10M2223/061; C10M2227/00; C10M2227/02; C10N; C10N2010/00; C10N2010/04; C10N2030/00; C10N2030/12; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A CORROSION INHIBITOR FOR METAL SURFACES COMPRISING THE COMBINATION OF AN OIL-SOLUBLE ORGANO-METALLIC PHOSPHIDE, WHICH COMPOUND HAS A METAL SUBSTITUENT SOLELY ATTACHED TO PHOSPHORUS AND CONTAINS AT LEAST ONE ORGANIC RADICAL SELECTED FROM THE CLASS CONSISTING OF HYDROCARBON AND HALOGEN-CONTAINING HYDROCARBON RADICALS, AND A NON-AQUEOUS OIL VEHICLE.
Claim 2
Dependent Claim
47 words
A CORROSION INHIBITOR FOR METAL SURFACES COMPRISING THE COMBINATION OF AN OIL-SOLUBLE ORGANO-METALLIC PHOSPHIDE, WHICH COMPOUND HAS A METAL SUBSTITUENT SOLELY ATTACHED TO PHOSPHORUS AND CONTAINS AT LEAST ONE ORGANIC RADICAL SELECTED FROM THE CLASS CONSISTING OF HYDROCARBON AND HALOGEN-CONTAINING HYDROCARBON RADICALS, AND A NON-AQUEOUS OIL VEHICLE.
References Cited (Backward Citations)
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Cited
US2199944A
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GB483400A
Cited
US2149271A
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US2321307A
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US2224695A
Cited
US2400573A
Cited
US2486664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-24 | 1956-08-25 | 1957-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-24 | 1960-08-25 | 1961-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-24 | 1964-08-25 | 1965-02-24 | $7700.00 | Window Closed / Lapsed |