US3001869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nodular iron manufacture
Assignee: Ford Motor Co
•
Filing: 1959-08-07
•
Granted: 1961-09-26
•
Expires: 1979-08-07
Abstract
No abstract record available.
Inventors
- 👤 William G Longstreth
- 👤 Royal A Van Patten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:34
CPC Classifications
C; C21; C21C; C21C1/00; C21C1/08; C21C1/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12222; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12951; Y10T428/12958
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
THE PROCESS OF IMPARTING A NODULARIZING ADDITION OF MAGNESIUM TO A CAST IRON BASE METAL COMPRISING PLACING WITHIN A LADLE A LAYER OF METALLIC MAGNESIUM, SUPERIMPOSING UPON THIS LAYER OF METALLIC MAGNESIUM A LAYER OF FERROUS METAL AT A TEMPERATURE SUBSTANTIALLY BELOW THE TEMPERATURE OF MOLTEN CAST IRON, AND POURING MOLTEN CAST IRON BASE METAL INTO THE LADLE.
Claim 2
Dependent Claim
58 words
THE PROCESS OF IMPARTING A NODULARIZING ADDITION OF MAGNESIUM TO A CAST IRON BASE METAL COMPRISING PLACING WITHIN A LADLE A LAYER OF METALLIC MAGNESIUM, SUPERIMPOSING UPON THIS LAYER OF METALLIC MAGNESIUM A LAYER OF FERROUS METAL AT A TEMPERATURE SUBSTANTIALLY BELOW THE TEMPERATURE OF MOLTEN CAST IRON, AND POURING MOLTEN CAST IRON BASE METAL INTO THE LADLE.
References Cited (Backward Citations)
US1922037A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |