US2443103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of porous slags or other smelts
Assignee: Individual
•
Filing: 1944-05-09
•
Granted: 1948-06-08
•
Expires: 1964-05-09
Abstract
No abstract record available.
Inventors
- 👤 Gallai-Hatchard Marcel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:18
CPC Classifications
C; C03; C03B; C03B19/00; C03B19/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US476409A
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US824340A
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GB191400839A
Cited
US1117644A
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US1163605A
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US1616855A
Cited
US1916954A
Cited
US2023511A
Cited
US2212962A
Cited
US2286078A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |