US3428497A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making bonded welding flux
Assignee: L-Tec Co
•
Filing: 1966-04-26
•
Granted: 1969-02-18
•
Expires: 1986-04-26
Abstract
No abstract record available.
Inventors
- 👤 Thomas L Coless
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:37
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/362
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
76 words
A METHOD FOR MAKING A WELDING COMPOSITION WHICH COMPRISES: (A) DRY MIXING INGREDIENTS TO BE MADE INTO A WELDING COMPOSITION; (B) ADDING AN AQUEOUS SOLUTION OF A BONDING AGENT TO THE DRY MIXED INGREDIENTS; (C) PASSING SAID INGREDIENTS THROUGH A GRANULATING DEVICE TO FORM WET, BONDED GRANULES OF THE WELDING COMPOSITION; (D) INTRODUCING CARBON DIOXIDE INTO THE WET INGREDIENTS TO CAUSE SAID GRANULES TO BECOME FREE-FLOWING; AND (E) HEATING SAID GRANULES TO THOROUGHLY DRY THE SAME.
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) | 1972-02-18 | 1972-08-19 | 1973-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-18 | 1976-08-19 | 1977-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-18 | 1980-08-19 | 1981-02-18 | $7700.00 | Window Closed / Lapsed |