US3227547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Degassing molten metals
Assignee: Union Carbide Corp
•
Filing: 1961-11-24
•
Granted: 1966-01-04
•
Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 Andrew G Szekely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:38
CPC Classifications
F; F27; F27D; F27D27/00; B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/233; B01F23/2331; B01F23/2336; B01F23/23364; C; C22; C22B; C22B9/00; C22B9/05; B01F2101/00; B01F2101/45; B01F23/23311; B01F23/23314; B01F27/00; B01F27/05; B01F27/11; B01F27/112; B01F27/1125; B01F27/113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS FOR FORMING AND DISPERSING A MULTITUTDE OF GAS BUBBLES LESS THAN 10 MILLIMETERS IN DIAMETER WITHIN A BODY OF MOLTEN METAL COMPRISING; (A) PROVIDING A SUPPLY OF GAS UNDER PRESSURE; (B) CONDUCTING A CONFINED STREAM OF SAID GAS INTO SAID BODY OF SAID MOLTEN METAL BELOW THE NORMAL SURFACE OF SAID MOLTEN METAL; (C) PASSING SAID GAS THROUGH ORIFICE MEANS, THE OUTLET OF WHICH IS SUBMERGED IN SAID BODY OF SAID MOLTEN METAL; (D) MAINTAINING THE FLOW RATE OF SAID CONFINED STREAM OF SAID GAS AT A VALUE GREATER THAN ABOUT 10 STANDARD CUBIC FEET PER HOUR AND SIMULTANEOUSLY MAINTAINING THE CROSS-SECTIONAL AREA OF SAID CONFINED STREAM OF GAS AT THE OUTLET OF SAID ORIFICE MEANS AT A VALUE LESS THAN ABOUT 100$ SQUARE MILLIMETERS AND;
Claim 2
Dependent Claim
128 words
A PROCESS FOR FORMING AND DISPERSING A MULTITUTDE OF GAS BUBBLES LESS THAN 10 MILLIMETERS IN DIAMETER WITHIN A BODY OF MOLTEN METAL COMPRISING; (A) PROVIDING A SUPPLY OF GAS UNDER PRESSURE; (B) CONDUCTING A CONFINED STREAM OF SAID GAS INTO SAID BODY OF SAID MOLTEN METAL BELOW THE NORMAL SURFACE OF SAID MOLTEN METAL; (C) PASSING SAID GAS THROUGH ORIFICE MEANS, THE OUTLET OF WHICH IS SUBMERGED IN SAID BODY OF SAID MOLTEN METAL; (D) MAINTAINING THE FLOW RATE OF SAID CONFINED STREAM OF SAID GAS AT A VALUE GREATER THAN ABOUT 10 STANDARD CUBIC FEET PER HOUR AND SIMULTANEOUSLY MAINTAINING THE CROSS-SECTIONAL AREA OF SAID CONFINED STREAM OF GAS AT THE OUTLET OF SAID ORIFICE MEANS AT A VALUE LESS THAN ABOUT 100$ SQUARE MILLIMETERS AND;
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |