US2728637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ternary alkaline earth metal sulfides of titanium and their preparation
Assignee: EIDP Inc
•
Filing: 1953-07-27
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Granted: 1955-12-27
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Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Witty Lysle Alderson
- 👤 John T Maynard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 05:55
CPC Classifications
C; C01; C01G; C01G23/00; C01G23/002; C01B; C01B17/00; C01B17/42; C01P; C01P2002/00; C01P2002/70; C01P2002/72; C01P2006/00; C01P2006/80
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A TERNARY METAL SULFIDE IN WHICH THE SULFUR IS CHEMICALLY COMBINED WITH BARIUM AND TITANIUM.
Claim 2
Dependent Claim
15 words
A TERNARY METAL SULFIDE IN WHICH THE SULFUR IS CHEMICALLY COMBINED WITH BARIUM AND TITANIUM.
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) | 1958-12-26 | 1959-06-27 | 1959-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-26 | 1963-06-27 | 1963-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-26 | 1967-06-27 | 1967-12-27 | $7700.00 | Window Closed / Lapsed |