US3832297A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for electrolytic treatment of graphite fibers
Assignee: Hercules LLC
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Filing: 1973-03-09
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Granted: 1974-08-27
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Expires: 1993-03-09
Abstract
Abstract THIS INVENTION IS AN IMPROVED PROCESS FOR THE ELECTROLYTIC SURFACE TREATMENT OF GRAPHITE FIBER. IN THE PROCESS OF OF THIS INVENTION ORGANIC OR INORGANIC AMMONIUM COMPOUNDS WHICH ARE WATER-SOLUBLE AND WHICH DECOMPOSED TO GASEOUS PRODUCTS BELOW ABOUT 250* C. ARE EMPLOYED. RESIDUAL MATERIAL PRESENT IN THE FIBER SURFACE FOLLOWING ELECTROLYTIC TREATMENT IS EASILY REMOVED BY HEATING OF THE FIBER TO VOLATILIZED MATERIAL.
Inventors
- 👤 J Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:15
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/34; D; D01; D01F; D01F11/00; D01F11/10; D01F11/12; D01F11/14; D01F11/16; Y; Y10; Y10S; Y10S264/00; Y10S264/19
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |