US3057677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yttrium and rare earth borates
Assignee: AT&T Inc
•
Filing: 1960-10-06
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Granted: 1962-10-09
•
Expires: 1980-10-06
Abstract
No abstract record available.
Inventors
- 👤 Albert A Ballman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:09
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/06; C01B35/08; C01B35/10; C01B35/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A COMPOSITION OF MATTER HAVING THE GENERAL FORMULA RX3B4O12 WHERE R IS SELECTED FROM THE GROUP CONSISTING OF YTTRIUM AND RARE EARTH ELEMENTS OF ATOMIC NUMBER 62-68 AND WHERE X IS SELECTED FROM THE GROUP CONSISTING OF CHROMIUM AND ALUMINUM BUT WHERE X IS CHRONIUM R MUST BE A RARE ELEMENT.
Claim 2
Dependent Claim
51 words
A COMPOSITION OF MATTER HAVING THE GENERAL FORMULA RX3B4O12 WHERE R IS SELECTED FROM THE GROUP CONSISTING OF YTTRIUM AND RARE EARTH ELEMENTS OF ATOMIC NUMBER 62-68 AND WHERE X IS SELECTED FROM THE GROUP CONSISTING OF CHROMIUM AND ALUMINUM BUT WHERE X IS CHRONIUM R MUST BE A RARE ELEMENT.
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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |