US2911319A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped bodies of carbon and process for preparing same
Assignee: Hoechst AG
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Filing: 1954-12-24
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Granted: 1959-11-03
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Expires: 1974-12-24
Abstract
No abstract record available.
Inventors
- 👤 Peter Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:01
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/521; Y; Y10; Y10T; Y10T428/00; Y10T428/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A PROCESS FOR TREATING A PREBACKED AND SHAPED CARBON BODY WHICH COMPRISES IMPREGNATIG AND IMMERSING A PREBAKED SHAPED CARBON BODY WITH AND IN A BATH OF LIQUID PITCH, BAKING THE IMPREGNATED AND STILL IMMERSED BODY UNTIL COKING OF THE IMPREGNATED PITCH IS EFFECTED, AND THEREFTER SEPRATING THE BAKED BODY FROM THE CARBONACEOUS MATTER FORMED FROM THE BATH OF LIQUID PITCH DURING THE BAKING STEP.
Claim 2
Dependent Claim
64 words
A PROCESS FOR TREATING A PREBACKED AND SHAPED CARBON BODY WHICH COMPRISES IMPREGNATIG AND IMMERSING A PREBAKED SHAPED CARBON BODY WITH AND IN A BATH OF LIQUID PITCH, BAKING THE IMPREGNATED AND STILL IMMERSED BODY UNTIL COKING OF THE IMPREGNATED PITCH IS EFFECTED, AND THEREFTER SEPRATING THE BAKED BODY FROM THE CARBONACEOUS MATTER FORMED FROM THE BATH OF LIQUID PITCH DURING THE BAKING STEP.
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) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |