US2793191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibition of monobasic acids
Assignee: EIDP Inc
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Filing: 1954-04-15
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Granted: 1957-05-21
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Expires: 1974-04-15
Abstract
No abstract record available.
Inventors
- 👤 Michael A Streicher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:54
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
80 words
THE METHOD OF SUBSTANTIALLY INHIBITING THE CORROSIVENESS IN AQUEOUS SOLUTION OF AT LEAST ONE OF THE GROUP CONSISTING OF FORMIC, ACETIC, SULFAMIC AND GYLCOLIC ACIDS TOWARD STAINLESS STEELS COMPRISING INCORPORATING IN SAID SOLUTION A MINOR QUANTITY OF A FERRIC ION-CONTRIBUTING SALT OTHER THAN AN IRON HALIDE, BUT NOT LESS THAN AN AMOUNT YIELDING FROM ABOUT 0.02 TO ABOUT 0.23 GRAM/LITER OF FERRIC IRON, DEPENDING UPON THE SPECIFIC SOLUTION AND STEEL INVOLVED, AND THEREAFTER CONTACTING SAID STAINLESS STEELS WITH SAID SOLUTION
Claim 2
Independent Claim
80 words
THE METHOD OF SUBSTANTIALLY INHIBITING THE CORROSIVENESS IN AQUEOUS SOLUTION OF AT LEAST ONE OF THE GROUP CONSISTING OF FORMIC, ACETIC, SULFAMIC AND GYLCOLIC ACIDS TOWARD STAINLESS STEELS COMPRISING INCORPORATING IN SAID SOLUTION A MINOR QUANTITY OF A FERRIC ION-CONTRIBUTING SALT OTHER THAN AN IRON HALIDE, BUT NOT LESS THAN AN AMOUNT YIELDING FROM ABOUT 0.02 TO ABOUT 0.23 GRAM/LITER OF FERRIC IRON, DEPENDING UPON THE SPECIFIC SOLUTION AND STEEL INVOLVED, AND THEREAFTER CONTACTING SAID STAINLESS STEELS WITH SAID SOLUTION
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) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |