US2529345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of durably finishing iron articles and composition therefor
Assignee: Individual
•
Filing: 1949-01-11
•
Granted: 1950-11-07
•
Expires: 1969-01-11
Abstract
No abstract record available.
Inventors
- 👤 Adolph W Machlet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:46
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
68 words
A METHOD OF IMPARTING A DURABLE FINISH TO IRON ARTICLES WHICH CONSISTS IN MIXING THEM WITH A POWDERY MIXTURE CONTAINING ABOUT TEN PARTS OF RED-MUD, AND ABOUT FOUR PARTS OF CHARCOAL, AND ABOUT FOUR PARTS OF AN AGENT CONTAINING IRON AND COPPER SULPHATES, THEN SUBJECTING THE WHOLE TO A RISING TEMPERATURE UNTIL APPROXIMATELY 1500*F. IS ATTAINED, AND FINALLY ALLOWING THE WHOLE TO COOL IN THE ABSENCE OF AIR.
References Cited (Backward Citations)
US379438A
Cited
US1197694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |