US3932935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for manufacturing a ductile silver metallic oxide semi-product
Assignee: Doduco Solutions GmbH
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Filing: 1974-02-14
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Granted: 1976-01-20
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Expires: 1994-02-14
Abstract
Abstract There is produced a ductile silver-metallic oxide semifinished product, for example a silver cadmium oxide wire, or a sheet or square rod having silver-metallic oxide, silver-metallic, and silver metalloid compounds. There are assembled in sandwich fashion several plates of internally oxidized silver-metallic oxide and of powder metallurgically produced silver-metallic oxide. The sandwich is then extrusion pressed.
Inventors
- 👤 Ulf O. Harmsen
- 👤 Wolfgang S. Pottken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:46
CPC Classifications
C; C22; C22C; C22C49/00; B; B22; B22F; B22F3/00; B22F3/20; C22C32/00; C22C32/001; C22C32/0015; C22C32/0021; H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; H01H1/0237; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49204; Y10T29/49206
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
64 words
A method for producing a ductile silver metallic oxide semi-finished product comprising: a. selecting plates of a particular silver-metallic oxide material from a class consisting of internally oxidized and powder metallurgically produced material; b. stacking said plates; c. aligning said plates in a predetermined relationship for subsequent extrusion; d. securing said alignment; and e. extruding said plates under conditions of elevated temperature and pressure.
Claim 2
Independent Claim
64 words
A method for producing a ductile silver metallic oxide semi-finished product comprising: a. selecting plates of a particular silver-metallic oxide material from a class consisting of internally oxidized and powder metallurgically produced material; b. stacking said plates; c. aligning said plates in a predetermined relationship for subsequent extrusion; d. securing said alignment; and e. extruding said plates under conditions of elevated temperature and pressure.
Claim 3
Dependent Claim
25 words
The process of claim 1 in which said plates are stacked alternatively with plates selected from the group consisting of silver-metallic and silver metalloid material.
Claim 4
Dependent Claim
61 words
A method as claimed in claim 1, wherein the oxide plates have a metallic oxide content of from 5 to 20 percent by weight, and the oxides are selected from the group consisting of cadmium oxide, zinc oxide, tin oxide, copper oxide, lead oxide, iron oxide, indium oxide, molybdenum oxide, manganese oxide, antimony oxide, nickel oxide, and mixtures of these oxides.
Claim 5
Dependent Claim
22 words
A method as claimed in claim 3, wherein the oxide plates have a metallic oxide contact of approximately 15 percent by weight.
Claim 6
Dependent Claim
14 words
A method as claimed in claim 3, wherein the metallic oxide is cadmium oxide.
Claim 7
Dependent Claim
17 words
A method as claimed in claim 1, wherein the bar has a wood-like, fibrous oxide strata structure.
Claim 8
Dependent Claim
15 words
A method as claimed in claim 1, wherein the pressed bar is of square cross-section.
Claim 9
Dependent Claim
19 words
A method as claimed in claim 1, wherein the bar is composed of several plates 0.1 to 20mm thick.
Claim 10
Dependent Claim
15 words
A method as claimed in claim 8, wherein the plates are each approximately 1mm thick.
References Cited (Backward Citations)
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US3545067A
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US3814640A
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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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |