Patent US3462289A successfully refreshed from Google Patents.
US3462289A
Expired / Lapsed
US
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Process for producing reinforced carbon and graphite bodies
Assignee: Unifrax I LLC
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Filing: 1965-08-05
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Granted: 1969-08-19
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Expires: 1985-08-05
Abstract
No abstract record available.
Inventors
- 👤 Cornelius W Rohl
- 👤 James H Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:33
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/71; C04B35/78; C04B35/80; C04B35/83; C01; C01B; C01B32/00; Y; Y10; Y10S; Y10S264/00; Y10S264/19; Y10S273/00; Y10S273/23; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2911319A
Cited
US3233014A
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US3238054A
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US3174895A
Cited
US3203849A
Cited
US3167447A
Cited
US3316337A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-08-18 | 1973-02-17 | 1973-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-08-18 | 1977-02-17 | 1977-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-08-18 | 1981-02-17 | 1981-08-19 | $7700.00 | Window Closed / Lapsed |