Patent US42272A successfully refreshed from Google Patents.
Patent US3079221A successfully refreshed from Google Patents.
US3079221A
Expired / Lapsed
US
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Process for corrosion inhibition
Assignee: General Mills Inc
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Filing: 1959-12-21
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Granted: 1963-02-26
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Donald L Andersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:57
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
THE PROCESS FOR CORROSION INHIBITION OF FERROUS METALLIC SUBSTANCES CONTACTED BY AQUEOUS CORROSIVE MEDIA WHICH COMPRISES CONTACTING SAID SUBSTANCES WITH A CORROSION INHIBITING AMOUNT OF THE POLYQUATERNARY AMMONIUM COMPOUND REPRESENTED BY THE FORMULA
Claim 2
Dependent Claim
33 words
THE PROCESS FOR CORROSION INHIBITION OF FERROUS METALLIC SUBSTANCES CONTACTED BY AQUEOUS CORROSIVE MEDIA WHICH COMPRISES CONTACTING SAID SUBSTANCES WITH A CORROSION INHIBITING AMOUNT OF THE POLYQUATERNARY AMMONIUM COMPOUND REPRESENTED BY THE FORMULA
References Cited (Backward Citations)
US2901430A
Cited
US2913305A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |