US2315346A
Expired / Lapsed
US
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Method of improving graphite electrodes
Assignee: Imperial Chemical Industries Ltd
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Filing: 1941-05-10
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Granted: 1943-03-30
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Expires: 1961-05-10
Abstract
No abstract record available.
Inventors
- 👤 Mitche Joseph Arthur Woodcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:53
CPC Classifications
H; H01; H01J; H01J19/00; H01J19/28; H01J19/30; B; B29; B29D; B29D5/00; B29D5/02; B29C; B29C48/00; B29C48/03; B29C48/25; B29C48/30; B29C48/35; C; C25; C25B; C25B11/00; C25B11/04; C25B11/042; C25B11/043; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0019; H01J2893/002; H01J2893/0021
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) | 1946-03-29 | 1946-09-28 | 1947-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1950-03-29 | 1950-09-28 | 1951-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1954-03-29 | 1954-09-28 | 1955-03-30 | $7700.00 | Window Closed / Lapsed |