Patent US2658833A successfully refreshed from Google Patents.
US2658833A
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Bismuth stannate and compositions employing same
Assignee: Primerica Inc
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Filing: 1952-06-03
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Granted: 1953-11-10
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Expires: 1972-06-03
Abstract
No abstract record available.
Inventors
- 👤 William W Coffeen
- 👤 Hartmut W Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:45
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/46; C04B35/462; C04B35/465; C04B35/468; C04B35/4682; C01; C01G; C01G29/00; C01P; C01P2002/00; C01P2002/02; C01P2002/70; C01P2002/72; C01P2002/74
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
2 words
BISMUTH STANNATE.
Claim 2
Dependent Claim
2 words
BISMUTH STANNATE.
Claim 3
Dependent Claim
43 words
A RANGE OF NOVEL CERAMIC DIELECTRICS COMPOSED SUBSTANTIALLY OF BARIUM TITANATE AND BISMUTH STANNATE, THE MOLECULAR RATIO OF BISMUTH STANNATE TO BARIUM TITANATE BEING CONFINED WITHIN THE LIMITS OF 1/2 TO 991/2 ON THE ONE HAND AND 30 TO 70 ON THE OTHER.
Claim 4
Dependent Claim
43 words
A RANGE OF NOVEL CERAMIC DIELECTRICS COMPOSED SUBSTANTIALLY OF BARIUM TITANATE AND BISMUTH STANNATE, THE MOLECULAR RATIO OF BISMUTH STANNATE TO BARIUM TITANATE BEING CONFINED WITHIN THE LIMITS OF 1/2 TO 991/2 ON THE ONE HAND AND 30 TO 70 ON THE OTHER.
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) | 1956-11-09 | 1957-05-11 | 1957-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-09 | 1961-05-11 | 1961-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-09 | 1965-05-11 | 1965-11-10 | $7700.00 | Window Closed / Lapsed |