US3514285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for feeding additive materials into a stream of molten metals
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
•
Filing: 1967-08-15
•
Granted: 1970-05-26
•
Expires: 1987-08-15
Abstract
No abstract record available.
Inventors
- 👤 Hermanus Bakkerus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:48
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/0037; C21C7/0043
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2260226A
Cited
US2574764A
Cited
US2677609A
Cited
US2663635A
Cited
US3001864A
Cited
US3210183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-25 | 1973-11-24 | 1974-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-25 | 1977-11-24 | 1978-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-25 | 1981-11-24 | 1982-05-26 | $7700.00 | Window Closed / Lapsed |