US3147107A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Immersion melting
Assignee: Individual
•
Filing: 1961-07-13
•
Granted: 1964-09-01
•
Expires: 1981-07-13
Abstract
No abstract record available.
Inventors
- 👤 Frank W Brooke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:29
CPC Classifications
F; F27; F27D; F27D3/00; F27D3/0025; F27D3/0027; F27D13/00; F27D3/06; F27D3/12; F27D2003/125; F27D3/0028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
AN IMPROVED PROCEDURE FOR CHARGING METAL MELTING FURNACE WHICH COMPRISES, FORMING A CHARGE OF THE METAL MATERIAL INTO A COMPACE UNIT, PROVIDING A MOLTEN METAL POOL WITHIN THE FURNACE OF A DEPTH SUFFIENT OF FULLY SUBMERGE THE COMPACT UNIT CHARGE, DIRECTLY INTRODUCING THE COMPACT UNIT CHARGE BENEATH THE SURFACE OF THE MOLTEN METAL POOL BY DISPLACEMENT-IMMERSING IT THEREIN, AND FULLY
Claim 2
Dependent Claim
60 words
AN IMPROVED PROCEDURE FOR CHARGING METAL MELTING FURNACE WHICH COMPRISES, FORMING A CHARGE OF THE METAL MATERIAL INTO A COMPACE UNIT, PROVIDING A MOLTEN METAL POOL WITHIN THE FURNACE OF A DEPTH SUFFIENT OF FULLY SUBMERGE THE COMPACT UNIT CHARGE, DIRECTLY INTRODUCING THE COMPACT UNIT CHARGE BENEATH THE SURFACE OF THE MOLTEN METAL POOL BY DISPLACEMENT-IMMERSING IT THEREIN, AND FULLY
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) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |