US3039970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for inhibiting corrosion of ferrous metals
Assignee: Diversey Wyandotte Corp
•
Filing: 1958-11-05
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Granted: 1962-06-19
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Expires: 1978-11-05
Abstract
No abstract record available.
Inventors
- 👤 Robert H Krueger
- 👤 Neil W Berst
- 👤 Leslie L Alt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:56
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
THE METHOD OF INHIBITING CORROSION OF FERROUS METALS IN CONTACT WITH AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 0.25 TO ABOUT 20% WT./VOL. OF A CAUSTIC ALKALI AND FROM ABOUT 0.002 TO ABOUT 5% WT./VOL,. OF A WATER-SOLUBLE ALIPHATIC SATURATED POLYHYDROXY SEQUESTERING COMPOUND HAVING THE FORMULA
Claim 2
Independent Claim
45 words
THE METHOD OF INHIBITING CORROSION OF FERROUS METALS IN CONTACT WITH AN AQUEOUS SOLUTION CONTAINING FROM ABOUT 0.25 TO ABOUT 20% WT./VOL. OF A CAUSTIC ALKALI AND FROM ABOUT 0.002 TO ABOUT 5% WT./VOL,. OF A WATER-SOLUBLE ALIPHATIC SATURATED POLYHYDROXY SEQUESTERING COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2584017A
Cited
GB297508A
Cited
US2721183A
Cited
US2653861A
Cited
US2806060A
Cited
US2856298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |