US3236706A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making porous metallic article
Assignee: Dow Chemical Co
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Filing: 1961-11-17
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Granted: 1966-02-22
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Expires: 1981-11-17
Abstract
No abstract record available.
Inventors
- 👤 Henry A Kuchek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:10
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/08; Y; Y10; Y10S; Y10S55/00; Y10S55/05; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981; Y10T29/4998; Y10T29/49988; Y10T29/49989; Y10T70/00; Y10T70/70; Y10T70/7006; Y10T70/7011; Y10T70/7023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A PROCESS FOR THE PREPARATION OF A POROUS ARTICLE WHICH COMPRISES PACKING AN INERT SOLUBLE SALT IN GRANULAR FORM IN A MOLD, PREHEATING THE MOLD, CASTIG IN SAID MOLD AN ALUMINUM ALLOY CONTAINING FROM 5 TO 20 WEIGHT PERCENT OF MAGNESIUM AND THE REMAINDER BEING SUBSTANTIALLY ALUMINUM, COOLING THE CAST ALLOY IN THE MOLD TO OB-
Claim 2
Dependent Claim
56 words
A PROCESS FOR THE PREPARATION OF A POROUS ARTICLE WHICH COMPRISES PACKING AN INERT SOLUBLE SALT IN GRANULAR FORM IN A MOLD, PREHEATING THE MOLD, CASTIG IN SAID MOLD AN ALUMINUM ALLOY CONTAINING FROM 5 TO 20 WEIGHT PERCENT OF MAGNESIUM AND THE REMAINDER BEING SUBSTANTIALLY ALUMINUM, COOLING THE CAST ALLOY IN THE MOLD TO OB-
References Cited (Backward Citations)
US2849297A
Cited
US2895819A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |