US2567156A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitor for concentrated phosphoric acid
Assignee: Monsanto Chemicals Ltd
•
Filing: 1947-12-31
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Granted: 1951-09-04
•
Expires: 1967-12-31
Abstract
No abstract record available.
Inventors
- 👤 John E Malowan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:29
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/04; C23G; C23G1/00; C23G1/02; C23G1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS FOR THE INHIBITION OF CORROSION OF PHOSPHORIC ACID ESSENTIALLY COMPRISING THE DISSOLVING THEREIN OF A NITRILE HAVING FROM 6 TO 20 CARBON ATOMS IN COMBINATION WITH AN IONIZABLE IODIDE IN INHIBITORY CONCENTRATIONS TO INHIBIT THE CORROSIVE ACTION OF THE ACID ON IRON AND STEEL
Claim 2
Dependent Claim
46 words
A PROCESS FOR THE INHIBITION OF CORROSION OF PHOSPHORIC ACID ESSENTIALLY COMPRISING THE DISSOLVING THEREIN OF A NITRILE HAVING FROM 6 TO 20 CARBON ATOMS IN COMBINATION WITH AN IONIZABLE IODIDE IN INHIBITORY CONCENTRATIONS TO INHIBIT THE CORROSIVE ACTION OF THE ACID ON IRON AND STEEL
References Cited (Backward Citations)
US1809041A
Cited
US2336448A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-09-03 | 1955-03-05 | 1955-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-03 | 1959-03-05 | 1959-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-03 | 1963-03-05 | 1963-09-04 | $7700.00 | Window Closed / Lapsed |