US2936884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibition in aqueous ammonia-ammonium nitrate systems
Assignee: Pure Oil Co
•
Filing: 1958-05-20
•
Granted: 1960-05-17
•
Expires: 1978-05-20
Abstract
No abstract record available.
Inventors
- 👤 Glenn A Marsh
- 👤 Schaschl Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:35
CPC Classifications
C; C23; C23F; C23F11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
IN COMBINATION, A FERROUS METAL CONTAINER CONTAINING (A) AN AQUEOUS AMMONIUM NITRATE SOLUTION CONTAINING DISSOLVED AMMONIA AND NORMALLY CORROSIVE TO FERROUS METALS, SAID SOLUTION CONTAINING AT LEAST 0.01 WT. PERCENT OF 2-MERCAPTOBENZOTHIAZOLE DISSOLVED THEREIN TO INHIBIT CORROSION OF THE WALLS OF THE CONTAINER IN CONTACT WITH THE SOLUTION, AND (B) A LAYER OF MINERAL OIL FLOATING ON AND COVERING THE SURFACE OF SAID SOLUTION, AND SAID MINERAL OIL HAVING DISSOLVED THEREIN AT LEAST 0.1 WT. PERCENT OF A POLAR COMPOUND TO INHIBIT CORROSION OF THE WALLS OF SAID CONTAINER ABOVE THE LIQUID LEVEL.
Claim 2
Dependent Claim
93 words
IN COMBINATION, A FERROUS METAL CONTAINER CONTAINING (A) AN AQUEOUS AMMONIUM NITRATE SOLUTION CONTAINING DISSOLVED AMMONIA AND NORMALLY CORROSIVE TO FERROUS METALS, SAID SOLUTION CONTAINING AT LEAST 0.01 WT. PERCENT OF 2-MERCAPTOBENZOTHIAZOLE DISSOLVED THEREIN TO INHIBIT CORROSION OF THE WALLS OF THE CONTAINER IN CONTACT WITH THE SOLUTION, AND (B) A LAYER OF MINERAL OIL FLOATING ON AND COVERING THE SURFACE OF SAID SOLUTION, AND SAID MINERAL OIL HAVING DISSOLVED THEREIN AT LEAST 0.1 WT. PERCENT OF A POLAR COMPOUND TO INHIBIT CORROSION OF THE WALLS OF SAID CONTAINER ABOVE THE LIQUID LEVEL.
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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |