US2502183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of carbon bodies
Assignee: GREAT LAKES CARBON Corp
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Filing: 1947-04-02
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Granted: 1950-03-28
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Expires: 1967-04-02
Abstract
No abstract record available.
Inventors
- 👤 Lloyd C Swallen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:59
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/52; C04B35/528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF FORMING SHAPED CARBON BODIES WHICH COMPRISES HOT MOLDING CRUSHED PARTICLES OF A NORMALLY INFUSIBLE, RAW UNCALCINED COKE DERIVED FROM CRACKING OF HEAVY LIQUEFIABLE HYDROCARBON MIXTURES, SAID COKE CONTAINING AND BEING CAPABLE OF EVOLVING FROM ABOUT 10% TO ABOUT 18% OF VOLATILE ORGANIC MATTER ONLY UPON CARBONIZATION OF SAID COKE, CONDUCTING SAID MOLDING UNDER PRESSURE AT A TEMPERATURE OF ABOUT 250*C. TO ABOUT 450*C. TO AUTOGENOUSLY BOND THE PARTICLES INTO A DENSE, COHERENT, SHAPED BODY, AND CARBONIZING THE MATERIAL SO PRODUCED.
Claim 2
Independent Claim
83 words
A METHOD OF FORMING SHAPED CARBON BODIES WHICH COMPRISES HOT MOLDING CRUSHED PARTICLES OF A NORMALLY INFUSIBLE, RAW UNCALCINED COKE DERIVED FROM CRACKING OF HEAVY LIQUEFIABLE HYDROCARBON MIXTURES, SAID COKE CONTAINING AND BEING CAPABLE OF EVOLVING FROM ABOUT 10% TO ABOUT 18% OF VOLATILE ORGANIC MATTER ONLY UPON CARBONIZATION OF SAID COKE, CONDUCTING SAID MOLDING UNDER PRESSURE AT A TEMPERATURE OF ABOUT 250*C. TO ABOUT 450*C. TO AUTOGENOUSLY BOND THE PARTICLES INTO A DENSE, COHERENT, SHAPED BODY, AND CARBONIZING THE MATERIAL SO PRODUCED.
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) | 1953-03-27 | 1953-09-26 | 1954-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-27 | 1957-09-26 | 1958-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-27 | 1961-09-26 | 1962-03-28 | $7700.00 | Window Closed / Lapsed |