US2731362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum coating of ferrous metal articles
Assignee: Alcoa Corp
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Filing: 1953-01-02
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Granted: 1956-01-17
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Expires: 1973-01-02
Abstract
No abstract record available.
Inventors
- 👤 Brondyke Kenneth James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:43
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/30; C23C2/04; C23C2/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE METHOD OF COATING A FERROUS METAL BODY WITH ALUMINOUS METAL BY THE TOP COATING PROCESS WHEREIN THE ALUMINOUS METAL IS DIRECTLY BONDED TO THE FERROUS METAL BODY COMPRISING CONVERING THE SURFACE OF SAID FERROUS METAL BODY WITH A DRY SOLID CHLORIDE-FREE FLUX, SAID FLUX CONTAINING AS IT ESSENTIAL COMPONENTS FROM 65 TTO 85% BY WEIGHT OF AT LEAST ONE ALKALI METAL BROMIDE AND FROM 15 TO 35% OF AT LEAST ONE FLUORIDE OF THE GROUP CONSISTING OF POTASSIUM FLUORIDE AND POTASSIUM ACID FLUORIDE, IMMERSING SAID FLUX COVERED BODY IN A BATH OF MOLTEN ALUMINOUS METAL AND THEREAFTER WITHDRAWING THE BODY FROM THE MOLTEN BATH.
Claim 2
Independent Claim
105 words
THE METHOD OF COATING A FERROUS METAL BODY WITH ALUMINOUS METAL BY THE TOP COATING PROCESS WHEREIN THE ALUMINOUS METAL IS DIRECTLY BONDED TO THE FERROUS METAL BODY COMPRISING CONVERING THE SURFACE OF SAID FERROUS METAL BODY WITH A DRY SOLID CHLORIDE-FREE FLUX, SAID FLUX CONTAINING AS IT ESSENTIAL COMPONENTS FROM 65 TTO 85% BY WEIGHT OF AT LEAST ONE ALKALI METAL BROMIDE AND FROM 15 TO 35% OF AT LEAST ONE FLUORIDE OF THE GROUP CONSISTING OF POTASSIUM FLUORIDE AND POTASSIUM ACID FLUORIDE, IMMERSING SAID FLUX COVERED BODY IN A BATH OF MOLTEN ALUMINOUS METAL AND THEREAFTER WITHDRAWING THE BODY FROM THE MOLTEN BATH.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |