Patent US2958588A successfully refreshed from Google Patents.
US2958588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sublimed oxide furnace
Assignee: Cyprus Amax Minerals Co
•
Filing: 1958-06-20
•
Granted: 1960-11-01
•
Expires: 1978-06-20
Abstract
No abstract record available.
Inventors
- 👤 Jack M Noy
- 👤 Delbert C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:56
CPC Classifications
C; C01; C01G; C01G39/00; C01G39/02; F; F27; F27B; F27B9/00; F27B9/14; F27B9/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A FURNACE FOR PRODUCING HIGH PURITY M0O3 FROM LOWER PURITY MOO3 WHICH INCLUDES A HORIZONTAL ANNULAR HEARTH MOUNTED FOR ROTATION ABOUT A SUBSTANTIALLY VERTICAL AXIS, MEANS OPERATIVELY ASSOCIATED WITH THE FURNACE OF FEEDING MOO3 ONTO SAID HEARTH, A HOOD ARRANGED IN A COVERING RELATION WITH SAID HEARTH, AND HEATING MEANS ABOVE THE HEARTH FOR VIOLATION MOO3 THEREON, A PLUARITY OF EXHAUST TUBES CONNECTED TO PERIPHERALLY SPACED PORTIONS OF THE HOOD AT POSITIONS ADJACENT SAID HEARTH FOR WITHDRAWING SAID VOLATILIZED MOO3 THEREFORM DRAFT TUBE MEANS CONNECTED TO SAID EXHAUST TUBES AT A SINGLE POINT REMOTE FROM SAID HOOD FOR PROVIDING DRAFTS THEREIN FOR WITHDRAWING SAID VOLATILIZED MOO3 FROM SAID FURNACE MEANS FOR SUPPLYING AIR TO SAID HEARTH, AND MEANS OPERATIVELY ASSOCIATED WITH EACH OF SAID EXHAUST TUBES FOR REGULATING AND ADJUSTING THE RATE OF FLOW OF MATERIAL THEREIN.
Claim 2
Dependent Claim
138 words
IN A FURNACE FOR PRODUCING HIGH PURITY M0O3 FROM LOWER PURITY MOO3 WHICH INCLUDES A HORIZONTAL ANNULAR HEARTH MOUNTED FOR ROTATION ABOUT A SUBSTANTIALLY VERTICAL AXIS, MEANS OPERATIVELY ASSOCIATED WITH THE FURNACE OF FEEDING MOO3 ONTO SAID HEARTH, A HOOD ARRANGED IN A COVERING RELATION WITH SAID HEARTH, AND HEATING MEANS ABOVE THE HEARTH FOR VIOLATION MOO3 THEREON, A PLUARITY OF EXHAUST TUBES CONNECTED TO PERIPHERALLY SPACED PORTIONS OF THE HOOD AT POSITIONS ADJACENT SAID HEARTH FOR WITHDRAWING SAID VOLATILIZED MOO3 THEREFORM DRAFT TUBE MEANS CONNECTED TO SAID EXHAUST TUBES AT A SINGLE POINT REMOTE FROM SAID HOOD FOR PROVIDING DRAFTS THEREIN FOR WITHDRAWING SAID VOLATILIZED MOO3 FROM SAID FURNACE MEANS FOR SUPPLYING AIR TO SAID HEARTH, AND MEANS OPERATIVELY ASSOCIATED WITH EACH OF SAID EXHAUST TUBES FOR REGULATING AND ADJUSTING THE RATE OF FLOW OF MATERIAL THEREIN.
References Cited (Backward Citations)
US520369A
Cited
US2603471A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |