US3390981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of finely divided metals
Assignee: EIDP Inc
•
Filing: 1965-11-09
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Granted: 1968-07-02
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Expires: 1985-11-09
Abstract
No abstract record available.
Inventors
- 👤 Lewis C Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:53
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/02; A; A21; A21D; A21D6/00; A21D6/003; B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/24; C; C01; C01G; C01G5/00; C01G5/003; C01G55/00; C01G55/001; C01G7/00; C01G7/003; C22; C22B; C22B11/00; C22B11/04; C22B3/00; C22B3/20; C22B3/26; C22B3/32; C22B3/44; C22C; C22C1/00; C22C1/02; C22C5/00; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
THE PROCESS FOR THE PRODUCTION OF A FINELY DIVIDED ALLOY CONSISTING ESSENTIALLY OF TWO NOBLE METALS, WHICH METALS FROM CONTINUOUS SERIES OF SOLID SOLUTION THROUGHOUT THEIR ENTIRE ALLOY COMPOSITION RANGE WITHOUT THE FORMATION OF COMPOUNDS OF EUTECTICS WHICH COMPRISES FORMING A SOLUTION OF COMPOUNDS OF THE TWO NOBLE METAL CONSTITUENTS OF THE ALLOY TO BE FORMED WITH THE TWO NOBLE METAL CONSTITUENTS PRESENT IN APPROXIMATELY THE SAME RELATIVE PROPORTIONS THAT THEY ARE TO PRESENT IN THE ALLOY TO BE FORMED AND WITH EACH OF SID TWO NOBLE METAL CONSTITUENTS CONSTITUTING FROM 10-90% OF THE TOTAL AMOUNT OF SAAID TWO NOBLE METAL CONSTITUENTS, AND MIXING WITH SAID SOLUTION A REDUCING AGENT CAPABLE OF SIMULTANEOUSLY REDUCING THE METAL CONSTITUENTS OF THE COMPOUNDS TO THEIR METALS, WHEREBY TO PRECIPITATE ALLOY PARTICLES FROM THE SOLUTION.
Claim 2
Dependent Claim
131 words
THE PROCESS FOR THE PRODUCTION OF A FINELY DIVIDED ALLOY CONSISTING ESSENTIALLY OF TWO NOBLE METALS, WHICH METALS FROM CONTINUOUS SERIES OF SOLID SOLUTION THROUGHOUT THEIR ENTIRE ALLOY COMPOSITION RANGE WITHOUT THE FORMATION OF COMPOUNDS OF EUTECTICS WHICH COMPRISES FORMING A SOLUTION OF COMPOUNDS OF THE TWO NOBLE METAL CONSTITUENTS OF THE ALLOY TO BE FORMED WITH THE TWO NOBLE METAL CONSTITUENTS PRESENT IN APPROXIMATELY THE SAME RELATIVE PROPORTIONS THAT THEY ARE TO PRESENT IN THE ALLOY TO BE FORMED AND WITH EACH OF SID TWO NOBLE METAL CONSTITUENTS CONSTITUTING FROM 10-90% OF THE TOTAL AMOUNT OF SAAID TWO NOBLE METAL CONSTITUENTS, AND MIXING WITH SAID SOLUTION A REDUCING AGENT CAPABLE OF SIMULTANEOUSLY REDUCING THE METAL CONSTITUENTS OF THE COMPOUNDS TO THEIR METALS, WHEREBY TO PRECIPITATE ALLOY PARTICLES FROM THE SOLUTION.
References Cited (Backward Citations)
US1164141A
Cited
US1426517A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-02 | 1972-01-01 | 1972-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-02 | 1976-01-01 | 1976-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-02 | 1980-01-01 | 1980-07-02 | $7700.00 | Window Closed / Lapsed |