US4634477A
Expired / Lapsed
US
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Workable high strength shape memory alloy
Assignee: KOBE SEIKO SHO 18 WAKINOHAMA-CHO 1-CHOME CHUO-KU KOBE 651 JAPAN KK
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Filing: 1985-09-17
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Granted: 1987-01-06
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Expires: 2005-09-17
Abstract
Abstract A workable high strength shape memory alloys comprising: Al: 11.5-13.5%, Ni: 2-6%, Mn: 1-5%, Ti: 0.1-5%, each on the weight basis, and the balance of Cu and inevitable impurities. In the modified alloy composition, the workability can be improved without increasing the martensitic transformation temperature.
Inventors
- 👤 Koichi Sugimoto
- 👤 Kiyoshi Kamei
- 👤 Yotaro Murakami
- 👤 Takashi Sugimoto
- 👤 Takashi Nishimura
- 👤 Takahiro Takashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:54
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
In a workable high strength shape memory alloy, consisting essentially of aluminum in amounts of 11.5-13.5%, nickel in amounts of 2-6%, titanium in amounts of 0.1-5%, and the balance copper, the improvement comprising the addition of Mn in amounts of 1-5%, to improve workability, all on a weight basis.
Claim 2
Dependent Claim
49 words
In a workable high strength shape memory alloy, consisting essentially of aluminum in amounts of 11.5-13.5%, nickel in amounts of 2-6%, titanium in amounts of 0.1-5%, and the balance copper, the improvement comprising the addition of Mn in amounts of 1-5%, to improve workability, all on a weight basis.
References Cited (Backward Citations)
SU206097A1
Cited
SU579332A1
Cited
EP0035069A1
Cited
JPS5834154A
Cited
JPS58167737A
Cited
JPS6077947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |