US3114628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for refining blister copper
Assignee: BRIAN JACKSON ASSOCIATES Inc
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Filing: 1959-05-20
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Granted: 1963-12-17
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Expires: 1979-05-20
Abstract
No abstract record available.
Inventors
- 👤 Eugene R Redmond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:33
CPC Classifications
C; C22; C22B; C22B15/00; C22B15/0026; C22B15/0028; C22B15/003; C22B15/0041; C22B15/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
IN A PROCESS OF REFINING BLISTER COPPER IN A CONVERTER HAVING A FLOWMETER INCLUDING THE STEPS OF BLOWING AIR INTO A MOLTEN MASS OF BLISTER COPPER UNTIL THE WORM STAGE IS REACHED, ADDING SILICA TO SAID MASS AS THE WORM IS ABOUT TO DISAPPEAR, CONTINUING THE BLOW UNTIL THE SILICA HAS FORMED A SOLID COATING OVER SAID MASS, AND POURING SAID MASS OUT FROM UNDER SAID COATING, THE IMPROVEMENT COMPRISING THE STEP OF DETERMINING THAT SAID WORM IS ABOUT TO DISAPPEAR BY OBSERVING THAT THE SAID FLOWMETER INDICATES A SUDDEN DROP IN THE VOLUME OF AIR BEING BLOWN INTO SAID MASS.
Claim 2
Dependent Claim
101 words
IN A PROCESS OF REFINING BLISTER COPPER IN A CONVERTER HAVING A FLOWMETER INCLUDING THE STEPS OF BLOWING AIR INTO A MOLTEN MASS OF BLISTER COPPER UNTIL THE WORM STAGE IS REACHED, ADDING SILICA TO SAID MASS AS THE WORM IS ABOUT TO DISAPPEAR, CONTINUING THE BLOW UNTIL THE SILICA HAS FORMED A SOLID COATING OVER SAID MASS, AND POURING SAID MASS OUT FROM UNDER SAID COATING, THE IMPROVEMENT COMPRISING THE STEP OF DETERMINING THAT SAID WORM IS ABOUT TO DISAPPEAR BY OBSERVING THAT THE SAID FLOWMETER INDICATES A SUDDEN DROP IN THE VOLUME OF AIR BEING BLOWN INTO SAID MASS.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-16 | 1967-06-17 | 1967-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-16 | 1971-06-17 | 1971-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-16 | 1975-06-17 | 1975-12-17 | $7700.00 | Window Closed / Lapsed |