US2678880A
Expired / Lapsed
US
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Method of making flaky aluminum powder
Assignee: Societe Anonyme pour lIndustrie de lAluminium SA
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Filing: 1952-05-09
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Granted: 1954-05-18
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Expires: 1972-05-09
Abstract
No abstract record available.
Inventors
- 👤 Nuesch Johannes
- 👤 Bertschy Meinrad
- 👤 Galeazzi Secondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:39
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/04; B22F1/00; B22F1/06; B22F1/068; B22F2998/00; Y; Y10; Y10S; Y10S75/00; Y10S75/954
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
A METHOD FOR THE PRODUCTION OF A FLAKY ALUMINUM POWDER, COMPRISING GRINDING A PRELIMINARILY COMMINUTED ALUMINUM IN A BALL MILL, WHILE MAINTAINING A PROTECTIVE GAS ATMOSPHERE, IN THE PRESENCE OF A RESTRICTEDLY CONTROLLED AMOUNT OF A LUBRICANT, WHEREBY THE MAJORITY OF THE ALUMINUM PARTICLES ARE WELDED TOGETHER INTO COARSER BODIES HAVING A BULK WEIGHT OF AT LEAST 0.7 KG./LITRE, AN ALUMINUM OXIDE CONTENTS OF AT LEAST 6 PER CENT AND A LUBRICANT CONTENTS OF LESS THAN 0.3 PER CENT, WHILE INTERPOSING INTO THE SAID MECHANICAL TREATMENT AT LEAST ONE STORAGE INTERVAL OF SEVERAL WEEKS IN THE PRESENCE OF AIR.
References Cited (Backward Citations)
GB625364A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-17 | 1957-11-16 | 1958-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-17 | 1961-11-16 | 1962-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-17 | 1965-11-16 | 1966-05-18 | $7700.00 | Window Closed / Lapsed |