Patent US2716057A successfully refreshed from Google Patents.
US2716057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal powders
Assignee: Ethyl Corp
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Filing: 1954-06-01
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Granted: 1955-08-23
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Expires: 1974-06-01
Abstract
No abstract record available.
Inventors
- 👤 Thomas P Whaley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:05
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
33 words
A PROCESS FOR THE PREPARATION OF METAL POWDERS COMPRISING REDUCING AT LEAST ONE METAL COMPOUND OTHER THAN AN ALKALI METAL COMPOUND WITH THE PORDUCT OBTAINED WHEN CONTACTING AN ALKALI METAL WITH AN ETHER.
Claim 2
Dependent Claim
33 words
A PROCESS FOR THE PREPARATION OF METAL POWDERS COMPRISING REDUCING AT LEAST ONE METAL COMPOUND OTHER THAN AN ALKALI METAL COMPOUND WITH THE PORDUCT OBTAINED WHEN CONTACTING AN ALKALI METAL WITH AN ETHER.
References Cited (Backward Citations)
US2177412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |