US3203902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rubidium-rare earth tungstate and molybdate optical maser materials
Assignee: AT&T Inc
•
Filing: 1961-08-07
•
Granted: 1965-08-31
•
Expires: 1981-08-07
Abstract
No abstract record available.
Inventors
- 👤 Ralph R Soden
- 👤 Le Grand G Van Uitert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:39
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/14; H01S3/16; H01S3/1688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A COMPOSITION OF MATTER HAVING THE EMPIRICAL FOR-ULA MULA RB0.5A0.5-XBXC, WHERE A IS SELECTED FROM THE GROUP CONSISTING OF LUTECIUM AND YTTRIUM, B IS A TRIVALENT RARE EARTH ION SELECTED FROM THE GROUP CONSISTING OF EUROPIUM, TERBIUM, AND YTTERBIUM, C IS SELECTED FROM THE GROUP CONSISTING OF WO4 AND MOO4, AND X HAS VALUE OF FROM 0.02 TO 0.50.
Claim 2
Dependent Claim
59 words
A COMPOSITION OF MATTER HAVING THE EMPIRICAL FOR-ULA MULA RB0.5A0.5-XBXC, WHERE A IS SELECTED FROM THE GROUP CONSISTING OF LUTECIUM AND YTTRIUM, B IS A TRIVALENT RARE EARTH ION SELECTED FROM THE GROUP CONSISTING OF EUROPIUM, TERBIUM, AND YTTERBIUM, C IS SELECTED FROM THE GROUP CONSISTING OF WO4 AND MOO4, AND X HAS VALUE OF FROM 0.02 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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |