US3314780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of pelletizing ore
Assignee: Inland Steel Co
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Filing: 1964-07-07
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Granted: 1967-04-18
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Expires: 1984-07-07
Abstract
No abstract record available.
Inventors
- 👤 Michael O Holowaty
- 👤 Arthur M Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:04
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/14; C22B1/24; C22B1/2406
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A PROCESS OF PRODUCING HEAT-HARDENED ORE PELLETS WHICH COMPRISES; FORMING AN ORE PELLETIZING MIX CONSISTING ESSENTIALLY OF GROUND ORE HAVING A PARTICLE SIZE DISTRIBUTION WITHIN THE RANGE OF A MINIMUM OF ABOUT 50% BY WEIGHT AND A MAXIMUM OF ABOUT 70% BY WEIGHT MINUS 100-MESH ORE PARTICLES WITH A MAXIMUM OF ABOUT 50% BY WEIGHT OF THE SAID MIX BEING MINUS 325-MESH ORE PARTICLES AND A MAXIMUM OF ABOUT 10% BY WEIGHT BEING PLUS 10-MESH ORE PARTICLES, ADJUSTING THE SURFACE MOISTURE CONTENT OF SAID PELLETIZING MIX TO BETWEEN ABOUT 9% AND 14% BY WEIGHT WATER AND FORMING UNIFORMLY
Claim 2
Dependent Claim
98 words
A PROCESS OF PRODUCING HEAT-HARDENED ORE PELLETS WHICH COMPRISES; FORMING AN ORE PELLETIZING MIX CONSISTING ESSENTIALLY OF GROUND ORE HAVING A PARTICLE SIZE DISTRIBUTION WITHIN THE RANGE OF A MINIMUM OF ABOUT 50% BY WEIGHT AND A MAXIMUM OF ABOUT 70% BY WEIGHT MINUS 100-MESH ORE PARTICLES WITH A MAXIMUM OF ABOUT 50% BY WEIGHT OF THE SAID MIX BEING MINUS 325-MESH ORE PARTICLES AND A MAXIMUM OF ABOUT 10% BY WEIGHT BEING PLUS 10-MESH ORE PARTICLES, ADJUSTING THE SURFACE MOISTURE CONTENT OF SAID PELLETIZING MIX TO BETWEEN ABOUT 9% AND 14% BY WEIGHT WATER AND FORMING UNIFORMLY
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) | 1970-04-17 | 1970-10-17 | 1971-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-17 | 1974-10-17 | 1975-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-17 | 1978-10-17 | 1979-04-18 | $7700.00 | Window Closed / Lapsed |