US3284319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition for treating metal surfaces
Assignee: Inland Steel Co
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Filing: 1965-01-08
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Granted: 1966-11-08
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Expires: 1985-01-08
Abstract
No abstract record available.
Inventors
- 👤 Uno T Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:08
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/24; C23C22/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A COMPOSITION FOR TREATING A METAL SURFACE SUSCEPTIBLE TO DAMAGE BY CORROSION SELECTED FROM THE GROUP CONSISTING OF ZINC, MAGNESIUM AND ALUMINUM AND ALLOYS THEREOF COMPRISING AS AN ESSENTIAL ACTIVE INGREDIENT AN AQUEOUS DISPERSION OF BETWEEN ABOUT 0.1% AND ABOUT 30% BY WEIGHT TRIBUTYL PHOSPHATE IN COMBINATION WITH 0.1% AND ABOUT 10% BY WEIGHT CHROMIC ANHYDRIDE AND WITH AT LEAST A PORTION OF SAID CHROMIC ANHYDRIDE BEING DISSOLVED BY SAID TRIBUTYL PHOSPHATE, AND SAID TRIBUTYL PHOSPHATE AND CHRONIC ANHYDRIDE BEING DISPERSED IN WATER CONTAINING BETWEEN ABOUT 0.1% AND ABOUT 30% BY WEIGHT MONOETHANOLAMINE AS AN EMULSIFYING AGENT, AND SAID AQUEOUS DISPERSION HAVING A PH OF BETWEEN ABOUT PH 2.5 AND 6.
Claim 2
Dependent Claim
111 words
A COMPOSITION FOR TREATING A METAL SURFACE SUSCEPTIBLE TO DAMAGE BY CORROSION SELECTED FROM THE GROUP CONSISTING OF ZINC, MAGNESIUM AND ALUMINUM AND ALLOYS THEREOF COMPRISING AS AN ESSENTIAL ACTIVE INGREDIENT AN AQUEOUS DISPERSION OF BETWEEN ABOUT 0.1% AND ABOUT 30% BY WEIGHT TRIBUTYL PHOSPHATE IN COMBINATION WITH 0.1% AND ABOUT 10% BY WEIGHT CHROMIC ANHYDRIDE AND WITH AT LEAST A PORTION OF SAID CHROMIC ANHYDRIDE BEING DISSOLVED BY SAID TRIBUTYL PHOSPHATE, AND SAID TRIBUTYL PHOSPHATE AND CHRONIC ANHYDRIDE BEING DISPERSED IN WATER CONTAINING BETWEEN ABOUT 0.1% AND ABOUT 30% BY WEIGHT MONOETHANOLAMINE AS AN EMULSIFYING AGENT, AND SAID AQUEOUS DISPERSION HAVING A PH OF BETWEEN ABOUT PH 2.5 AND 6.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |