Patent US2826499A successfully refreshed from Google Patents.
US2826499A
Expired / Lapsed
US
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Process for producing sintered metal articles
Assignee: BASF SE
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Filing: 1954-01-28
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Granted: 1958-03-11
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Expires: 1974-01-28
Abstract
No abstract record available.
Inventors
- 👤 Schlecht Leo
- 👤 Trageser Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:47
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; B22F9/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
THE PROCESS OF PRODUCING SINTERED METAL ARTICLES WHICH COMPRISES SINTERING TOGETHER POWDERS OF A SINTERABLE METAL FROM THE GROUP CONSISTING OF NICKEL, COBALT, COPPER AND ZINC PREVIOSLY DERIVED BY BRINGING SAID METAL INTO SOLUTION AS A COMPLEX AMMONIUM SALT OF THE METAL BY TREATMENT WITH AN AMMONIACAL AMMONIUM CARBONATE SOULTION AND OXIDIZING AGENT, PRECIPITATING SAID METAL AS A HYDROXY COMPOUND FROM THE SOLUTION, AND REDUCING THE PRECIPITATE TO THE METAL WITH HYDROGEN AT AN ELEVATED TEMPERATURE NOT EXCEEDING ABOUT 600*C.
Claim 2
Dependent Claim
80 words
THE PROCESS OF PRODUCING SINTERED METAL ARTICLES WHICH COMPRISES SINTERING TOGETHER POWDERS OF A SINTERABLE METAL FROM THE GROUP CONSISTING OF NICKEL, COBALT, COPPER AND ZINC PREVIOSLY DERIVED BY BRINGING SAID METAL INTO SOLUTION AS A COMPLEX AMMONIUM SALT OF THE METAL BY TREATMENT WITH AN AMMONIACAL AMMONIUM CARBONATE SOULTION AND OXIDIZING AGENT, PRECIPITATING SAID METAL AS A HYDROXY COMPOUND FROM THE SOLUTION, AND REDUCING THE PRECIPITATE TO THE METAL WITH HYDROGEN AT AN ELEVATED TEMPERATURE NOT EXCEEDING ABOUT 600*C.
References Cited (Backward Citations)
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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) | 1961-03-10 | 1961-09-09 | 1962-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-10 | 1965-09-09 | 1966-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-10 | 1969-09-09 | 1970-03-11 | $7700.00 | Window Closed / Lapsed |