Patent US2403301A successfully refreshed from Google Patents.
US2403301A
Expired / Lapsed
US
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Method for making artificial carbon pieces
Assignee: Individual
•
Filing: 1942-08-29
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Granted: 1946-07-02
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Expires: 1962-08-29
Abstract
No abstract record available.
Inventors
- 👤 Richon Andre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:29
CPC Classifications
H; H05; H05B; H05B31/00; H05B31/02; H05B31/06; H05B31/16; B; B29; B29C; B29C67/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-07-01 | 1949-12-31 | 1950-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-07-01 | 1953-12-31 | 1954-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-07-01 | 1957-12-31 | 1958-07-02 | $7700.00 | Window Closed / Lapsed |