US3041672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Making spheroidal powder
Assignee: Union Carbide Corp
•
Filing: 1958-09-22
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Granted: 1962-07-03
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Expires: 1978-09-22
Abstract
No abstract record available.
Inventors
- 👤 James W Lyle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:29
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/06; B22F9/08; B22F9/082; B01; B01J; B01J2/00; B01J2/02; B01J2/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
METHOD OF PRODUCING FINELY-DIVIDED SPHEROIDALSHAPED PARTICLES OF METALS AND METAL COMPOUNDS BY STRIKING A WALL-STABILIZED ARC BETWEEN A STICK ELECTRODE HAVING AN ARC CONSTRICTING PASSAGE AND A NOZZLE ELECTRODE, INTRODUCING AN CONSUMABLE WIRE OR ROD COMPOSED OF SAID METALS AND METAL COMPOUNDS INTO THE COLLIMATED PLASMA EFFLUENT OF SUCH ARC, PASSING A GAS STREAM COEXTENSIVE WITH SUCH COLLIMATED PLASMA THROUGH THE NOZZLE PASSAGE OF THE NOZZLE ELECTRODE TO SHEAR OFF MOLTEN MATERIAL FROM THE TIP OF THE CONSUMABLE WIRE WHEREBY SMALL DROPLETS ARE FORMED AND REMOVED FROM THE ARC ZONE, AND THEN SOLIDIFYING AND COLLECTING THE SO-PRODUCED FINELY-DIVIDED PARTICLES.
Claim 2
Dependent Claim
99 words
METHOD OF PRODUCING FINELY-DIVIDED SPHEROIDALSHAPED PARTICLES OF METALS AND METAL COMPOUNDS BY STRIKING A WALL-STABILIZED ARC BETWEEN A STICK ELECTRODE HAVING AN ARC CONSTRICTING PASSAGE AND A NOZZLE ELECTRODE, INTRODUCING AN CONSUMABLE WIRE OR ROD COMPOSED OF SAID METALS AND METAL COMPOUNDS INTO THE COLLIMATED PLASMA EFFLUENT OF SUCH ARC, PASSING A GAS STREAM COEXTENSIVE WITH SUCH COLLIMATED PLASMA THROUGH THE NOZZLE PASSAGE OF THE NOZZLE ELECTRODE TO SHEAR OFF MOLTEN MATERIAL FROM THE TIP OF THE CONSUMABLE WIRE WHEREBY SMALL DROPLETS ARE FORMED AND REMOVED FROM THE ARC ZONE, AND THEN SOLIDIFYING AND COLLECTING THE SO-PRODUCED FINELY-DIVIDED PARTICLES.
References Cited (Backward Citations)
US1128175A
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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) | 1965-07-02 | 1966-01-01 | 1966-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-02 | 1970-01-01 | 1970-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-02 | 1974-01-01 | 1974-07-03 | $7700.00 | Window Closed / Lapsed |