Patent US3177155A successfully refreshed from Google Patents.
US3177155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Logarithm of europium concentration
Assignee: —
•
Filing: —
•
Granted: 1965-04-06
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Expires: 1982-04-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:26
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/67; C09K11/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A COMPOSITION OF MATTER HAVING THE EMPIRICAL FORMULA K0.5TB0.5-XEUXA WHERE A IS SELECTED FROM THE GROUP CONSISTING OF WO4 AND M0L4 AND X HAS A VALUE OF FROM 0.003 TO 0.50.
Claim 2
Dependent Claim
31 words
A COMPOSITION OF MATTER HAVING THE EMPIRICAL FORMULA K0.5TB0.5-XEUXA WHERE A IS SELECTED FROM THE GROUP CONSISTING OF WO4 AND M0L4 AND X HAS A VALUE OF FROM 0.003 TO 0.50.
References Cited (Backward Citations)
US2929922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |