US2671040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal treating flux
Assignee: MW Kellogg Co
•
Filing: 1950-04-20
•
Granted: 1954-03-02
•
Expires: 1970-04-20
Abstract
No abstract record available.
Inventors
- 👤 Tunis L Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:43
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/52; C21C7/00; C21C7/04; C21C7/076; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A FLUX FOR METAL TREATING OPERATIONS IN WHICH HEAT IS GENERATED BY THE DISCHARGE OF ELECTRIC CURRENT FROM THE END OF AN ELECTRODE THROUGH A GAP SUBMBERGED BENEATH THE SURFACE OF A DEPTH OF FLUX, SAID FLUX CONSISTING ESSENTIALLY OF 25 TO 55% FLUORSPAR, 35 TO 65% ALUMINA, 10 TO 20% MAGNESIA, AND SMAL QUANTITIES OF OTHER MATERIALS THAT DO NOT SUBSTANTIALLY MODIFY THE CHARACTER OF THE FLUX, SAID FLUORSPAR, SAID ALUMINA, AND SAID MAGNESIA BEING PRESENT IN SAID FLUX PRIOR TO THE USE OF SAID FLUX IN SAID METAL TREATING OPERATIONS, AS UNCOMBINED MATERIALS.
Claim 2
Dependent Claim
95 words
A FLUX FOR METAL TREATING OPERATIONS IN WHICH HEAT IS GENERATED BY THE DISCHARGE OF ELECTRIC CURRENT FROM THE END OF AN ELECTRODE THROUGH A GAP SUBMBERGED BENEATH THE SURFACE OF A DEPTH OF FLUX, SAID FLUX CONSISTING ESSENTIALLY OF 25 TO 55% FLUORSPAR, 35 TO 65% ALUMINA, 10 TO 20% MAGNESIA, AND SMAL QUANTITIES OF OTHER MATERIALS THAT DO NOT SUBSTANTIALLY MODIFY THE CHARACTER OF THE FLUX, SAID FLUORSPAR, SAID ALUMINA, AND SAID MAGNESIA BEING PRESENT IN SAID FLUX PRIOR TO THE USE OF SAID FLUX IN SAID METAL TREATING OPERATIONS, AS UNCOMBINED MATERIALS.
References Cited (Backward Citations)
US277393A
Cited
US1945565A
Cited
US2150625A
Cited
US2235077A
Cited
US2191479A
Cited
US2282175A
Cited
US2397737A
Cited
US2432773A
Cited
US2461697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-01 | 1957-08-31 | 1958-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-01 | 1961-08-31 | 1962-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-01 | 1965-08-31 | 1966-03-02 | $7700.00 | Window Closed / Lapsed |