US3847829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystalline bismuth-containing oxides
Assignee: EIDP Inc
•
Filing: 1973-08-10
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Granted: 1974-11-12
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Expires: 1993-08-10
Abstract
Abstract 1. THE CRYSTALLINE BISMUTH-CONTAINING OXIDES OF THE FORMULA BI2-XMXM''2-3M"YO7-Z WHEREIN M IS A RARE EARTH METAL OF ATOMIC NUMBER 57-71, LEAD, CADMIUM OR YTRRIUM, M'' IS IRON GALLIUM, OR INDIUM, M" IS ANTIMONY, TANTALUM, OR NIOBIUM, X IS A NUMBER IN THE RANGE 0 TO 1 Y IS A NUMBER IN THE RANGE 1 TO 1.5, AND Z IS A NUMBER IN THE RANGE 0 TO 0.5.
Inventors
- 👤 R Bouchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:41
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/08; H01G4/10; H01B; H01B3/00; H01B3/008; H01B3/02; H01B3/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
7 words
THE CRYSTALLINE BISMUTH-CONTAINING OXIDES OF THE FORMULA
Claim 2
Dependent Claim
7 words
THE CRYSTALLINE BISMUTH-CONTAINING OXIDES OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |