US2853409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum treating method
Assignee: Vereinigte Aluminium Werke AG
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Filing: 1956-11-16
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Granted: 1958-09-23
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Expires: 1976-11-16
Abstract
No abstract record available.
Inventors
- 👤 Helling Werner
- 👤 Neunzig Heinrich
- 👤 Nies Wolfgang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:33
CPC Classifications
C; C22; C22C; C22C21/00; C22C21/06; C22C21/08; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101; Y10T74/2102
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
IN A METHOD OF FORMING A STABLE GLOSSY SURFACE ON A BODY OF A SUBSTANCE BELONGING TO THE GROUP CONSISTING OF ALUMINUM AND ALUMINUM ALLOYS ESSENTIALLY CONSISTING OF ALUMINUM AND UP TO 3% MAGNESIUM, UP TO 1% SILICON AND UP TO 0.06% IRON, THE STEPS OF HEATING SAID BODY AT A TEMPERATURE AS CLOSE AS POSSIBLE TO THE SOLIDS TEMPERATURE OF SAID BODY BUT SUFFICENTLY BELOW THE SAME TO PREVENT MELTING OF ANY PORTION OF SAID BODY AND UNTIL RECRYSTALLIZATION OF SAID BODY, WHEREBY THE SURFACE PROPERTIES OF SAID BODY ARE CHANGED SO THAT THE SURFACE IS BETTER ADAPTED FOR HIGH-GLOSS POLISHING, AND POLISHING THE SURFACE OF SAID BODY, THEREBY FORMING A STABLE, GLOSSY SURFACE THEREON.
Claim 2
Dependent Claim
116 words
IN A METHOD OF FORMING A STABLE GLOSSY SURFACE ON A BODY OF A SUBSTANCE BELONGING TO THE GROUP CONSISTING OF ALUMINUM AND ALUMINUM ALLOYS ESSENTIALLY CONSISTING OF ALUMINUM AND UP TO 3% MAGNESIUM, UP TO 1% SILICON AND UP TO 0.06% IRON, THE STEPS OF HEATING SAID BODY AT A TEMPERATURE AS CLOSE AS POSSIBLE TO THE SOLIDS TEMPERATURE OF SAID BODY BUT SUFFICENTLY BELOW THE SAME TO PREVENT MELTING OF ANY PORTION OF SAID BODY AND UNTIL RECRYSTALLIZATION OF SAID BODY, WHEREBY THE SURFACE PROPERTIES OF SAID BODY ARE CHANGED SO THAT THE SURFACE IS BETTER ADAPTED FOR HIGH-GLOSS POLISHING, AND POLISHING THE SURFACE OF SAID BODY, THEREBY FORMING A STABLE, GLOSSY SURFACE THEREON.
References Cited (Backward Citations)
US2262696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-22 | 1962-03-24 | 1962-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-22 | 1966-03-24 | 1966-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-22 | 1970-03-24 | 1970-09-23 | $7700.00 | Window Closed / Lapsed |