US4071358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat resisting copper base brazing filler metal
Assignee: Komatsu Ltd
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Filing: 1977-02-16
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Granted: 1978-01-31
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Expires: 1997-02-16
Abstract
Abstract A heat resisting copper base brazing filler metal consisting essentially of by weight percent, 10 to 20 manganese, 2 to 10 nickel, 0.5 to 4.0 tin, 0.5 to 4.0 indium and balance copper. The brazing filler metal provides sound, tight joints with excellent strength retention at elevated temperatures.
Inventors
- 👤 Ichiro Kawakatsu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:10
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/302
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
37 words
A heat resisting copper base brazing filler metal consisting essentially of by weight percent, about 10 to 20 manganese, about 2 to 10 nickel, about 0.5 to 4.0 tin, about 0.5 to 4.0 indium and balance copper.
Claim 2
Dependent Claim
37 words
A heat resisting copper base brazing filler metal consisting essentially of by weight percent, about 10 to 20 manganese, about 2 to 10 nickel, about 0.5 to 4.0 tin, about 0.5 to 4.0 indium and balance copper.
Claim 3
Dependent Claim
29 words
A heat resisting copper base brazing filler metal of claim 1 wherein tin is about 1.0 to 3.0 weight percent and indium is about 1.0 to 3.0 weight percent.
Claim 4
Dependent Claim
37 words
A heat resisting copper base brazing filler metal consisting essentially of by wight percent, about 12 to 17 manganese, about 5 to 8 nickel, about 1.0 to 3.0 tin, about 1.0 to 3.0 indium and balance copper.
Claim 5
Dependent Claim
37 words
A heat resisting copper base brazing filler metal consisting essentially of by wight percent, about 12 to 17 manganese, about 5 to 8 nickel, about 1.0 to 3.0 tin, about 1.0 to 3.0 indium and balance copper.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |