US2479097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Boron carbide compound
Assignee: Individual
•
Filing: 1946-05-27
•
Granted: 1949-08-16
•
Expires: 1966-05-27
Abstract
No abstract record available.
Inventors
- 👤 Buchanan Neville James
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:18
CPC Classifications
C; C22; C22C; C22C35/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1913373A
Cited
US1973441A
Cited
US1946130A
Cited
US1975310A
Cited
US2129347A
Cited
US2169193A
Cited
US2200258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |