US2874429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for casting-in of sintered metal bodies
Assignee: Alcan Research and Development Ltd
•
Filing: 1954-02-02
•
Granted: 1959-02-24
•
Expires: 1974-02-02
Abstract
No abstract record available.
Inventors
- 👤 Emter Dietrich
- 👤 Winterstein Hans-Ludwig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:45
CPC Classifications
B; B22; B22D; B22D19/00; B22D19/0009; B22D19/0027
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR PRODUCING A CASTING OF ALUMINED METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ALUMINUM ALLOYS, THAT IS TO CONTAIN AN EMBEDDED INSERT OF HEAT-RESISTANT CHARACTER, COMPRISING FORMING SAID INSERT AS A COMPRESSED AND SINTERED BODY OF PARTICLES OF METAL SELECTED FROM THE GROUP CONSISTING OF ALU-
Claim 2
Dependent Claim
50 words
A PROCESS FOR PRODUCING A CASTING OF ALUMINED METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ALUMINUM ALLOYS, THAT IS TO CONTAIN AN EMBEDDED INSERT OF HEAT-RESISTANT CHARACTER, COMPRISING FORMING SAID INSERT AS A COMPRESSED AND SINTERED BODY OF PARTICLES OF METAL SELECTED FROM THE GROUP CONSISTING OF ALU-
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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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |