US2643959A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the protective treatment of iron
Assignee: MANUFACTURERS CHEMICAL Corp
•
Filing: 1950-05-29
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Granted: 1953-06-30
•
Expires: 1970-05-29
Abstract
No abstract record available.
Inventors
- 👤 Fischer Johannes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:32
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/06; C23C10/08; C23C10/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR THE PROTECTIVE TREATMENT OF IRON, COMPRISING CAUSING IRON TO REACT AT 700* TO 1000* C. WITH AN ANHYDROUS GASEOUS MEDIUM CONSISTING OF HYDROGEN AND ALUMINUM CHLORIDE AND OBTAINED BY THE REACTION, AT 300* TO 600* C., OF ANHYDROUS HCI GAS AND A MIXTURE OF ALUMINUM, ALUMINUM OXIDE, AND COAL, UNTIL A COATING OF ALUMINUM IS DEPOSITED ON THE SURFACE OF THE IRON TREATED.
Claim 2
Dependent Claim
66 words
A PROCESS FOR THE PROTECTIVE TREATMENT OF IRON, COMPRISING CAUSING IRON TO REACT AT 700* TO 1000* C. WITH AN ANHYDROUS GASEOUS MEDIUM CONSISTING OF HYDROGEN AND ALUMINUM CHLORIDE AND OBTAINED BY THE REACTION, AT 300* TO 600* C., OF ANHYDROUS HCI GAS AND A MIXTURE OF ALUMINUM, ALUMINUM OXIDE, AND COAL, UNTIL A COATING OF ALUMINUM IS DEPOSITED ON THE SURFACE OF THE IRON TREATED.
References Cited (Backward Citations)
US351181A
Cited
US1091057A
Cited
US1497417A
Cited
US1711603A
Cited
US1729065A
Cited
US2470306A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-29 | 1956-12-29 | 1957-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-29 | 1960-12-29 | 1961-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-29 | 1964-12-29 | 1965-06-30 | $7700.00 | Window Closed / Lapsed |