US3215542A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light weight aggregate and process of making it
Assignee: Individual
•
Filing: 1962-10-05
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Granted: 1965-11-02
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Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 Charles D Tinker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:44
CPC Classifications
C; C04; C04B; C04B5/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
70 words
A PROCESS OF FORMING A CERAMIC WHICH CONSISTS OF (1) SINTERING EXPANDED BLAST FURNACE SLAG AGGREGATE BY BRINGING IT TO A TEMPERATURE OF ABOUT 2000*F. DURING A PERIOD OF ABOUT SIX HOURS; (2) MIXING THE SINTERED EXPANDED BLAST FURNACE SLAG AGGREGATE WITH CLAY; (3) FORMING THE MIXTURE OF SLAG AND CLAY IN THE DESIRED FORM; AND FIRING THE FORMED MIXTURE OF SLAG AND CLAY AT A TEMPERATURE OF ABOUT 2000*F.
Claim 2
Dependent Claim
70 words
A PROCESS OF FORMING A CERAMIC WHICH CONSISTS OF (1) SINTERING EXPANDED BLAST FURNACE SLAG AGGREGATE BY BRINGING IT TO A TEMPERATURE OF ABOUT 2000*F. DURING A PERIOD OF ABOUT SIX HOURS; (2) MIXING THE SINTERED EXPANDED BLAST FURNACE SLAG AGGREGATE WITH CLAY; (3) FORMING THE MIXTURE OF SLAG AND CLAY IN THE DESIRED FORM; AND FIRING THE FORMED MIXTURE OF SLAG AND CLAY AT A TEMPERATURE OF ABOUT 2000*F.
Claim 3
Dependent Claim
32 words
A PROCESS OF FORMING A STABILIZED EXPANDED SLAG AGGREGATE WHICH COMPRISES SINTERING THE EXPANDED SLAG AGGREGATE BY BRINGING IT TO A TEMPERATURE OF ABOUT 2000*F. DURING A PERIOD OF ABOUT SIX HOURS.
Claim 4
Dependent Claim
32 words
A PROCESS OF FORMING A STABILIZED EXPANDED SLAG AGGREGATE WHICH COMPRISES SINTERING THE EXPANDED SLAG AGGREGATE BY BRINGING IT TO A TEMPERATURE OF ABOUT 2000*F. DURING A PERIOD OF ABOUT SIX HOURS.
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) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |