US3577234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing alloys
Assignee: Johnson Matthey PLC
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Filing: 1967-08-04
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Granted: 1971-05-04
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Expires: 1987-08-04
Abstract
Abstract THIS INVENTION RELATES TO A BRAZING ALLOY SUITABLE FOR THE FLUXLESS BRAZING OF STEELS (UNALLOYED AND ALLOY STEELS INCLUDING STAINLESS STEEL). THE BRAZING ALLOY CONSISTS ESSENTIALLY OF 0.5-10% NICKEL, 0.01-0.05% BORON AND THE BALANCE COPPER.
Inventors
- 👤 John D Boughton
- 👤 Philip M Roberts
- 👤 Meczyslaw Herman Sloboda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:44
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/302
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |