US3791879A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solder flux composition
Assignee: Boeing North American Inc
•
Filing: 1973-05-21
•
Granted: 1974-02-12
•
Expires: 1993-05-21
Abstract
Abstract A fluxing composition suitable for soldering electrical connections and characterized by producing a bright and shiny solder joint comprising about 40 to 65 percent by weight of polypropylene glycol and 35 to 60 percent by weight rosin.
Inventors
- 👤 H Goldfarb
- 👤 C Valsamakis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:14
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3612; B23K35/3613
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1663004A
Cited
US2547771A
Cited
US2664371A
Cited
US2801196A
Cited
US2829998A
Cited
US2992949A
Cited
US3003901A
Cited
US3175932A
Cited
US3330028A
Cited
US3575738A
Cited
US3436278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-11 | 1977-08-13 | 1978-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-11 | 1981-08-13 | 1982-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-11 | 1985-08-13 | 1986-02-12 | $7700.00 | Window Closed / Lapsed |