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US4402906A
Expired / Lapsed
US
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Metallic material proof against attachment of marine organisms
Assignee: Mitsubishi Heavy Industries Ltd
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Filing: 1981-06-11
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Granted: 1983-09-06
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Expires: 2001-06-11
Abstract
Abstract An alloy containing Mn in an amount of from 5 to 30 weight percent, at least one member selected from the group consisting of Sn of an amount of not more than 5 weight percent, Al of an amount of not more than 8.5 weight percent, Zn of an amount of not more than 7 weight percent, Fe of an amount of not more than 2.5 weight percent, and Ni of an amount of not more than 2.5 weight percent, and the balance to make up 100 weight percent of Cu plus normally entrained impurities produces a metallic material proof against the attachment thereto of marine organisms when the alloy fulfils a requirement that it should possess an α(face-centered cubic lattice) single-phase structure.
Inventors
- 👤 Shoji Ueda
- 👤 Takashi Daikoku
- 👤 Masato Zama
- 👤 Shintaro Matsuo
- 👤 Masahiro Saito
- 👤 Hidejiro Kinoshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:25
CPC Classifications
C; C22; C22C; C22C9/00; C22C9/05
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A metallic alloy containing Mn in an amount of from 5 to 12.31 weight percent, at least one member selected from the group consisting of Sn in an amount of not more than 5 weight percent, Al in an amount of not more than 8.5 weight percent, Zn in an amount of not more than 7 weight percent, Fe in an amount of not more than 2.5 weight percent, and Ni in an amount of not more than 2.5 weight percent, and the balance to make up 100 weight percent of Cu plus normally entrained impurities and which is characterized by metallographically possessing an α-(face-centered cubic lattice) single-phase structure.
Claim 2
Dependent Claim
109 words
A metallic alloy containing Mn in an amount of from 5 to 12.31 weight percent, at least one member selected from the group consisting of Sn in an amount of not more than 5 weight percent, Al in an amount of not more than 8.5 weight percent, Zn in an amount of not more than 7 weight percent, Fe in an amount of not more than 2.5 weight percent, and Ni in an amount of not more than 2.5 weight percent, and the balance to make up 100 weight percent of Cu plus normally entrained impurities and which is characterized by metallographically possessing an α-(face-centered cubic lattice) single-phase structure.
References Cited (Backward Citations)
US3323913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |