US2776881A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of brass smelting
Assignee: Individual
•
Filing: 1952-02-11
•
Granted: 1957-01-08
•
Expires: 1972-02-11
Abstract
No abstract record available.
Inventors
- 👤 Alfred M Thomsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:44
CPC Classifications
C; C22; C22B; C22B4/00; C22B4/04; C22B19/00; Y; Y10; Y10S; Y10S261/00; Y10S261/09; Y10S266/00; Y10S266/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
THE METHOD OF SMELTING ZINC OXIDE WHICH COMPRISES; THE SMELTING, WITH ELECTRICALLY GENERATED HEAT OF AN AGGLOMERATED, CARBONACEOUS CHARGE CONSISTING OF ZINC OXIDE AND CARBON BY PASSING AND CHARGE DOWNWARDS AS A COLUMN IN A POSITION INCLINED FROM THE VERTICAL WHILE APPROACHING THE HEAT SOURCE; PASSING THE GASES AND VAPORS GENERATED IN SAID SMELTING UPWARDS THROUGH THE INCLINED COLUMN OF CHARGE TO CONDENSE WITHIN SAID CHARGE A SUBSTANTIAL POR-
Claim 2
Independent Claim
69 words
THE METHOD OF SMELTING ZINC OXIDE WHICH COMPRISES; THE SMELTING, WITH ELECTRICALLY GENERATED HEAT OF AN AGGLOMERATED, CARBONACEOUS CHARGE CONSISTING OF ZINC OXIDE AND CARBON BY PASSING AND CHARGE DOWNWARDS AS A COLUMN IN A POSITION INCLINED FROM THE VERTICAL WHILE APPROACHING THE HEAT SOURCE; PASSING THE GASES AND VAPORS GENERATED IN SAID SMELTING UPWARDS THROUGH THE INCLINED COLUMN OF CHARGE TO CONDENSE WITHIN SAID CHARGE A SUBSTANTIAL POR-
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) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |