Patent US3189491A successfully refreshed from Google Patents.
US3189491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum flux
Assignee: Dow Chemical Co
•
Filing: 1962-07-02
•
Granted: 1965-06-15
•
Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Frank E Robbins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:13
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3603; C; C22; C22B; C22B21/00; C22B21/06; C22B21/062; C22B9/00; C22B9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A FLUX COMPOSITION FOR USE IN MELTING ALUMINUM AND ALUMINUM ALLOYS CONTAINING AT LEAST 70 PERCENT ALUMINUM IN A MELT VESSEL, SAID FLUX COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT TWENTY TO ABOUT THIRTY-FIVE PERCENT SODIUM CHLORIDE, FROM ABOUT FIFTY TO ABOUT SEVENTY PERCENT CALCIUM CHLORIDE, FROM ABOUT FOUR TO ABOUT TEN PERCENT BARIUM CHLORIDE, AND FROM ABOUT THREE TO ABOUT TEN PERCENT CALCIUM FLUORIDE.
Claim 2
Dependent Claim
64 words
A FLUX COMPOSITION FOR USE IN MELTING ALUMINUM AND ALUMINUM ALLOYS CONTAINING AT LEAST 70 PERCENT ALUMINUM IN A MELT VESSEL, SAID FLUX COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT TWENTY TO ABOUT THIRTY-FIVE PERCENT SODIUM CHLORIDE, FROM ABOUT FIFTY TO ABOUT SEVENTY PERCENT CALCIUM CHLORIDE, FROM ABOUT FOUR TO ABOUT TEN PERCENT BARIUM CHLORIDE, AND FROM ABOUT THREE TO ABOUT TEN PERCENT CALCIUM FLUORIDE.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |