US3169115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manganese zinc ferrite containing vanadium pentoxide, silicon dioxide, and indium trioxide
Assignee: NEC Corp
•
Filing: 1961-08-22
•
Granted: 1965-02-09
•
Expires: 1981-08-22
Abstract
No abstract record available.
Inventors
- 👤 Akashi Tsuneo
- 👤 Tobita Masao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:52
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2658
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A MAGNETIC OXIDE MATERIAL CONSISTING ESSENTIALLY OF A MANGANESE ZINC FERRITE COMPOSITION CONTAINING FROM 52.3 TO 53.0 MOL PERCENT FERRIC OXIDE, FROM 25 TO 30 MOL PERCENT MANGANESE OXIDE AND FROM 17 TO 22.5 MOL PERCENT ZINC OXIDE, HAVING INCORPORATED THEREIN AT LEAST TWO OXIDE ADDITIVES SELECTED FROM THE GROUP CONSISTING OF FROM 0.005 TO 0.17 MOL PERCENT PERCENT VANADIUM PENTOXIDE, FROM 0.005 TO 0.11 MOL PERCENT SILICON DIOXIDE, AND FROM 0.05 TO 2.8 MOL PERCENT INDIUM TRIOXIDE.
Claim 2
Dependent Claim
78 words
A MAGNETIC OXIDE MATERIAL CONSISTING ESSENTIALLY OF A MANGANESE ZINC FERRITE COMPOSITION CONTAINING FROM 52.3 TO 53.0 MOL PERCENT FERRIC OXIDE, FROM 25 TO 30 MOL PERCENT MANGANESE OXIDE AND FROM 17 TO 22.5 MOL PERCENT ZINC OXIDE, HAVING INCORPORATED THEREIN AT LEAST TWO OXIDE ADDITIVES SELECTED FROM THE GROUP CONSISTING OF FROM 0.005 TO 0.17 MOL PERCENT PERCENT VANADIUM PENTOXIDE, FROM 0.005 TO 0.11 MOL PERCENT SILICON DIOXIDE, AND FROM 0.05 TO 2.8 MOL PERCENT INDIUM TRIOXIDE.
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) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |