Patent US2547691A successfully refreshed from Google Patents.
US2547691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel
Assignee: Individual
•
Filing: 1946-06-22
•
Granted: 1951-04-03
•
Expires: 1966-06-22
Abstract
No abstract record available.
Inventors
- 👤 Ralph H Churchill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:01
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR FORMING FUEL IN SHEET FORM, COMPRISING MIXING SULPHUR, ALUMINUM AND IRON, ALL IN FINELY-DIVIDED FORM, CONFINING THE MATERIAL UNDER PRESSURE IN COMMUNICATION WITH AN EXTRUDING, SHEET-FORMING OPENING, RAISING THE TEMPERATURE OF THE MIXTURE TO THE MELTING TEMPERATURE OF THE SULPHUR WHEREBY UNDER THE INFLUENCE OF PRESSURE THE MIXTURE FLOWS THROUGH THE OPENING IMMEDIATELY UPON THE ATTAINING OF SAID METLTING TEMPERATURE, AND AIR-COOLING THE EXTRUDED
Claim 2
Dependent Claim
67 words
A PROCESS FOR FORMING FUEL IN SHEET FORM, COMPRISING MIXING SULPHUR, ALUMINUM AND IRON, ALL IN FINELY-DIVIDED FORM, CONFINING THE MATERIAL UNDER PRESSURE IN COMMUNICATION WITH AN EXTRUDING, SHEET-FORMING OPENING, RAISING THE TEMPERATURE OF THE MIXTURE TO THE MELTING TEMPERATURE OF THE SULPHUR WHEREBY UNDER THE INFLUENCE OF PRESSURE THE MIXTURE FLOWS THROUGH THE OPENING IMMEDIATELY UPON THE ATTAINING OF SAID METLTING TEMPERATURE, AND AIR-COOLING THE EXTRUDED
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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) | 1954-04-02 | 1954-10-02 | 1955-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-02 | 1958-10-02 | 1959-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-02 | 1962-10-02 | 1963-04-03 | $7700.00 | Window Closed / Lapsed |