US3412062A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carbon fibres and compositions containing said fibres
Assignee: National Research Development Corp UK
•
Filing: 1965-04-19
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Granted: 1968-11-19
•
Expires: 1985-04-19
Abstract
No abstract record available.
Inventors
- 👤 Johnson William
- 👤 Watt William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:56
CPC Classifications
D; D01; D01F; D01F9/00; D01F9/08; D01F9/12; D01F9/14; D01F9/20; D01F9/21; D01F9/22; C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/06; D01F11/00; D01F11/10; D01F11/14; D01F9/16; D01F9/18; Y; Y10; Y10S; Y10S264/00; Y10S264/19
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-19 | 1972-05-20 | 1972-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-19 | 1976-05-20 | 1976-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-19 | 1980-05-20 | 1980-11-19 | $7700.00 | Window Closed / Lapsed |