US3663667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing metal powders
Assignee: GTE Sylvania Inc
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Filing: 1970-02-13
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Granted: 1972-05-16
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Expires: 1990-02-13
Abstract
Abstract MULTIMETAL ALLOY POWDERS ARE PRODUCED BY A PROCESS WHEREIN AN AQUEOUS SOLUTION OF AT LEAST TWO THERMALLY REDUCIBLE METALLIC COMPOUNDS AND WATER IS FORMED, THE SOLUTION IS ATOMIZED INTO DROPLETS HAVING A DROPLET SIZE BELOW ABOUT 150 MICRONS IN A CHAMBER THAT CONTAINS A HEATED GAS WHEREBY DISCRETE SOLID PARTICLES ARE FORMED AND THE PARTICLES ARE THEREAFTER HEATED IN A REDUCING ATMOSPHERE AND AT TEMPERATURES FROM THOSE SUFFICIENT TO REDUCE SAID METALLIC COMPOUNDS TO BELOW THE MELTING POINT OF ANY OF THE METALS IN SAID ALLOY.
Inventors
- 👤 Richard F Cheney
- 👤 James S Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:26
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; B22F9/22; B22F2998/00; B22F2998/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |