Patent US2770528A successfully refreshed from Google Patents.
US2770528A
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US
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Barium ferrous group metal ternary sulfides and their preparation
Assignee: EIDP Inc
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Filing: 1954-03-15
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Granted: 1956-11-13
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Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 John T Maynard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:16
CPC Classifications
C; C01; C01B; C01B17/00; C01B17/42; C01P; C01P2002/00; C01P2002/70; C01P2002/72; C01P2006/00; C01P2006/40
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
36 words
A BARIUM FERROUS GROUP METAL TERNARY SULFIDE CONFORMING TO THE GENERAL FORMULA BAMSI WHEREIN M IS A FERROUS GROUP METAL, X IS 2 TO 2.5, AND THE RATIO OF BARIUM TO FERROUS GROUP METAL IS 1:1.
Claim 2
Dependent Claim
36 words
A BARIUM FERROUS GROUP METAL TERNARY SULFIDE CONFORMING TO THE GENERAL FORMULA BAMSI WHEREIN M IS A FERROUS GROUP METAL, X IS 2 TO 2.5, AND THE RATIO OF BARIUM TO FERROUS GROUP METAL IS 1:1.
Claim 3
Dependent Claim
63 words
PROCESS FOR PREPARING A BARIUM FERROUS GROUP METAL TERNARY SULFIDE WHICH COMPRISES SINTERING BARIUM SULFIDE WITH A BINARY SILFIDE OF A FERROUS GROUP METAL AT A TEMPERATURE OF 800* TO 1400* C., IN AN ATMOSPHERE OF HYDROGEN SULFIDE, AND RECOVERING AS THE RESULTING REACTION PRODUCT A BARIUM FERROUS GROUP METAL TERNARY SULFIDE WHEREIN THE RATIO OF BARIUM TO FERROUS GROUP METAL IS 1:1.
Claim 4
Dependent Claim
63 words
PROCESS FOR PREPARING A BARIUM FERROUS GROUP METAL TERNARY SULFIDE WHICH COMPRISES SINTERING BARIUM SULFIDE WITH A BINARY SILFIDE OF A FERROUS GROUP METAL AT A TEMPERATURE OF 800* TO 1400* C., IN AN ATMOSPHERE OF HYDROGEN SULFIDE, AND RECOVERING AS THE RESULTING REACTION PRODUCT A BARIUM FERROUS GROUP METAL TERNARY SULFIDE WHEREIN THE RATIO OF BARIUM TO FERROUS GROUP METAL IS 1:1.
References Cited (Backward Citations)
US2500958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-13 | 1960-05-14 | 1960-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-13 | 1964-05-14 | 1964-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-13 | 1968-05-14 | 1968-11-13 | $7700.00 | Window Closed / Lapsed |