Patent US3047510A successfully refreshed from Google Patents.
US3047510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibiting compositions and process
Assignee: Armour and Co
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Filing: 1957-06-05
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Granted: 1962-07-31
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Expires: 1977-06-05
Abstract
No abstract record available.
Inventors
- 👤 Cizek Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:02
CPC Classifications
C; C23; C23G; C23G1/00; C23G1/02; C23G1/04; C23G1/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
110 words
A COMPOSITION SUBSTANTIALLY NON-CORROSIVE TO METALS COMPRISING AN AQUEOUS SOLUTION OF AN ACID SELECTED FROM THE GROUP CONSISTING OF SULFURIC, SULFAMIC ANDF PHOSPHORIC ACIDS, AND FROM 0.1 TO 1.0 WEIGHT PERCENT, BASED ON THE ACID, OF A CORROSION INHIBITING SYNERGISTIC COMBINATION OF ABOUT 1 PART BY WEIGHT OF DIBUTYLTHIOUREA AND FROM 1 TO 5 PARTS BY WEIGHT OF A QUATERNARY AMMONIUM COMPOUND HAVING THE FORMULA R4NX WHEREIN X IS A HALIDE AND R IS AN ALIPHATIC HYDROCARBON RDICAL CONTAINING FROM 1 TO 22 CARBOAN ATOMS, AND FUTHER CHARACTERIZED BY THE PRESENCE OF AT LEAST 1 AND NO MORE THAN 2 ALIPHATIC HYDROCARBON RADICALS CONTAINING FROM 8 TO 22 CARBON ATOMS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-30 | 1966-01-29 | 1966-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-30 | 1970-01-29 | 1970-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-30 | 1974-01-29 | 1974-07-31 | $7700.00 | Window Closed / Lapsed |