US2455509A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of extruding irregularly shaped carbon rods
Assignee: CHEMICAL DEVELOPMENTS Corp
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Filing: 1943-12-13
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Granted: 1948-12-07
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Expires: 1963-12-13
Abstract
No abstract record available.
Inventors
- 👤 Enrique L Luaces
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:16
CPC Classifications
B; B30; B30B; B30B11/00; B30B11/22; B30B11/26; B01; B01J; B01J21/00; B01J21/18; C; C01; C01B; C01B32/00; C01B32/30; C01B32/354; C01B32/384; B29; B29C; B29C48/00; B29C48/03; B29C48/06; B29C48/12; B29C48/25; B29C48/36; B29C48/475; Y; Y10; Y10S; Y10S425/00; Y10S425/101
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1630660A
Cited
FR706079A
Cited
US2065124A
Cited
US2117179A
Cited
US2142597A
Cited
US2216188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |