US3832242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brazing and solder compositions comprising a chelating agent
Assignee: SCM Metal Products Inc
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Filing: 1972-08-17
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Granted: 1974-08-27
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Expires: 1992-08-17
Abstract
Abstract IMPROVED BRAZING OR SOLDERING PASTE COMPOSITIONS COMPRISING A METALLIFEROUS OR BRAXING SOLDER POWER AND A FUGITIVE RESINOUS BINDER HAVE BEEN DEVELOPED. THE IMPROVEMENT COMPRISES A CHELTING AGENT DISPERSED THEREIN IN A PROPORTION OF ABOUT O.3-10% BY WEIGHT OF THE BINDER, THE CHELTING AGENT BEING SELECTED FROM THE GROUP CONSISTING OF TETRAKIS HYDROXYALKYL DERIVATIVES OF ALKYLENE DIAMINES, TETRAKIS CARBOXY ALKYL DERIVATIVES OF DIAMINE, ALKALI METAL SALTS OF TETRAKIS CARBOXY ALKYL DERIVATIVES OF ALKYL DIAMINES AND HYDROXY CARBOXYLIC ACIDS.
Inventors
- 👤 S Cuthbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:56
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/02; B23K35/0222; B23K35/0244; B23K35/025
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) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |