US2603592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pitch-like compositions
Assignee: GREAT LAKES CARBON Corp
•
Filing: 1948-06-15
•
Granted: 1952-07-15
•
Expires: 1968-06-15
Abstract
No abstract record available.
Inventors
- 👤 Harold W Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:00
CPC Classifications
C; C10; C10C; C10C1/00; C10C1/005; C10C3/00; C10C3/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A PROCESS WHICH COMPRISES MIXING A RAW, NORMALLY NON-FUSIBLE COKE PRODUCED BY NONCATALYTIC PYROLSIS OF HIGHBOILING LIQUID HYDROCARBONS, WITH AN ORGANIC SOLVENT THEREFOR, SAID SOLVENT BEING LIQUID IN THE RANGE OF 300-650* F. AND BOILING ABOVE 500* F., SUBSTANTIALLY COMPLETELY DISSOLVING SAID COKE IN SAID SOLVENT AT A TEMPERATURE OF 300-650* F., AND RECOVERING THE SUBSTANTIALLY HOMOGENEOUS SOLUTION THUS FORMED, SAID COKE HAVING A VOLATILE CONTENT OF AT LEAST 8% WHICH IS CAPABLE OF EVOLUTION ONLY UPON CARBONIZATION, THE PARTICLES OF SAID COKE HAVING THE FURTHER PROPERTY OF BEING DEFORMABLE UNDER APPLIED MECHANICAL PRESSURE WHEN HEATED AT ABOUT 500* F.
Claim 2
Dependent Claim
100 words
A PROCESS WHICH COMPRISES MIXING A RAW, NORMALLY NON-FUSIBLE COKE PRODUCED BY NONCATALYTIC PYROLSIS OF HIGHBOILING LIQUID HYDROCARBONS, WITH AN ORGANIC SOLVENT THEREFOR, SAID SOLVENT BEING LIQUID IN THE RANGE OF 300-650* F. AND BOILING ABOVE 500* F., SUBSTANTIALLY COMPLETELY DISSOLVING SAID COKE IN SAID SOLVENT AT A TEMPERATURE OF 300-650* F., AND RECOVERING THE SUBSTANTIALLY HOMOGENEOUS SOLUTION THUS FORMED, SAID COKE HAVING A VOLATILE CONTENT OF AT LEAST 8% WHICH IS CAPABLE OF EVOLUTION ONLY UPON CARBONIZATION, THE PARTICLES OF SAID COKE HAVING THE FURTHER PROPERTY OF BEING DEFORMABLE UNDER APPLIED MECHANICAL PRESSURE WHEN HEATED AT ABOUT 500* F.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-07-15 | 1956-01-14 | 1956-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-15 | 1960-01-14 | 1960-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-15 | 1964-01-14 | 1964-07-15 | $7700.00 | Window Closed / Lapsed |