US3275558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doubly doped titanium dioxide maser element
Assignee: RCA Corp
•
Filing: 1963-06-20
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Granted: 1966-09-27
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Expires: 1983-06-20
Abstract
No abstract record available.
Inventors
- 👤 Edward S Sabisky
- 👤 Hendrik J Gerritsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:29
CPC Classifications
H; H03; H03F; H03F7/00; H03F7/04; C; C04; C04B; C04B35/00; C04B35/01; C04B35/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF TITANIUM DIOXIDE CONTAINING BETWEEN 0.001 TO 0.5 MOL PERCENT OF ONE MEMBER OF THE GROUP CONSISTING OF ER3+ AND CO2+ AND BETWEEN 0.001 TO 0.5 MOL PERCENT OF AT LEAST ONE MEMBER OF THE GROUP CONSITING OF CR3+, FE3+, NI2+ AND MN3+.
Claim 2
Dependent Claim
49 words
A COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF TITANIUM DIOXIDE CONTAINING BETWEEN 0.001 TO 0.5 MOL PERCENT OF ONE MEMBER OF THE GROUP CONSISTING OF ER3+ AND CO2+ AND BETWEEN 0.001 TO 0.5 MOL PERCENT OF AT LEAST ONE MEMBER OF THE GROUP CONSITING OF CR3+, FE3+, NI2+ AND MN3+.
References Cited (Backward Citations)
US3001141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |