US4150980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum alloy excellent in high-temperature sagging resistance and sacrificial anode property
Assignee: MA Aluminum Corp
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Filing: 1978-05-30
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Granted: 1979-04-24
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Expires: 1998-05-30
Abstract
Abstract An aluminum alloy excellent in the high-temperature sagging resistance and the sacrificial anode property, which consists essentially of, in weight percentage:
Inventors
- 👤 Shigetake Imaizumi
- 👤 Kazuo Yamada
- 👤 Katashi Katsumata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:59
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/08; F28F21/081; F28F21/084; C; C22; C22C; C22C21/00; C22C21/10; C23; C23F; C23F13/00; C23F13/02; C23F13/06; C23F13/08; C23F13/12; C23F13/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
57 words
An aluminum alloy excellent in the high-temperature sagging resistance and the sacrificial anode property, which consists essentially of, in weight percentage: zinc: from 0.5 to 8.0%, manganese from 0.5 to 1.5%, and the balance aluminum and incidental impurities; said alloy being particularly adapted to be used as a fin material for a tube of a heat exchanger.
Claim 2
Dependent Claim
57 words
An aluminum alloy excellent in the high-temperature sagging resistance and the sacrificial anode property, which consists essentially of, in weight percentage: zinc: from 0.5 to 8.0%, manganese from 0.5 to 1.5%, and the balance aluminum and incidental impurities; said alloy being particularly adapted to be used as a fin material for a tube of a heat exchanger.
Claim 3
Dependent Claim
22 words
The aluminum alloy as claimed in claim 1, wherein said alloy also contains zirconium of from 0.01 to 0.5% in weight percentage.
References Cited (Backward Citations)
US3878871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-23 | 1982-10-23 | 1983-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-23 | 1986-10-23 | 1987-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-23 | 1990-10-23 | 1991-04-24 | $7700.00 | Window Closed / Lapsed |