Patent US2804415A successfully refreshed from Google Patents.
US2804415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of mnbi bodies
Assignee: AT&T Inc
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Filing: 1956-09-20
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Granted: 1957-08-27
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Expires: 1976-09-20
Abstract
No abstract record available.
Inventors
- 👤 Otis L Boothby
- 👤 Jr Daniel H Wenny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:15
CPC Classifications
C; C22; C22C; C22C28/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS OF PREPARING MNBI FROM A MOLTEN MASS CONTAINING MANGANESE AND BISMUTH IN PROPORTIONS SUCH AS TO YIELD, UPON FREEZING, A SOLIDIN WHICH THE RATIO OF THE NUMBER OF GRAM ATOMS OF MANGANESE TO THE NUMBER OF GRAM ATOMS OF BISMUTH PRESENT IS APPROXIMATELY UNITY, WHICH PROCESS COMPRISES SOLIDIFYING SAID MOLTEN MASS SUFFICIENTLY RAPIDLY TO PREVENT SUBSTANTIALLY PHASE SEGREGASTION, AND THEN HEATING THE SOLIDIFIED MATERIAL AT A TEMPERATURE BETWEEN ABOUT 250*C. AND ABOUT 445*C. UNTIL THE MATERIAL HAS BEEN SUBSTANTIALLY COMPLETEL CONVERTED TO MNBI.
Claim 2
Dependent Claim
85 words
THE PROCESS OF PREPARING MNBI FROM A MOLTEN MASS CONTAINING MANGANESE AND BISMUTH IN PROPORTIONS SUCH AS TO YIELD, UPON FREEZING, A SOLIDIN WHICH THE RATIO OF THE NUMBER OF GRAM ATOMS OF MANGANESE TO THE NUMBER OF GRAM ATOMS OF BISMUTH PRESENT IS APPROXIMATELY UNITY, WHICH PROCESS COMPRISES SOLIDIFYING SAID MOLTEN MASS SUFFICIENTLY RAPIDLY TO PREVENT SUBSTANTIALLY PHASE SEGREGASTION, AND THEN HEATING THE SOLIDIFIED MATERIAL AT A TEMPERATURE BETWEEN ABOUT 250*C. AND ABOUT 445*C. UNTIL THE MATERIAL HAS BEEN SUBSTANTIALLY COMPLETEL CONVERTED TO MNBI.
References Cited (Backward Citations)
US2576679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |