US3034987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic cores
Assignee: RCA Corp
•
Filing: 1957-12-31
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Granted: 1962-05-15
•
Expires: 1977-12-31
Abstract
No abstract record available.
Inventors
- 👤 Philip K Baltzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:00
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2608; C04B35/2616
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A MAGNETIC CORE HAVING A RATIO OF BR/BS OF AT LEAST 0.75 COMPRISING A CERAMIC OF SINTERED PARTICLES, SAID PARTICLES CONSISTING ESSENTIALLY OF A MIXED SPINEL HAVING THE MOLAR COMPOSITION:
Claim 2
Dependent Claim
30 words
A MAGNETIC CORE HAVING A RATIO OF BR/BS OF AT LEAST 0.75 COMPRISING A CERAMIC OF SINTERED PARTICLES, SAID PARTICLES CONSISTING ESSENTIALLY OF A MIXED SPINEL HAVING THE MOLAR COMPOSITION:
References Cited (Backward Citations)
FR908717A
Cited
US2576456A
Cited
US2565861A
Cited
US2549089A
Cited
US2677663A
Cited
GB735375A
Cited
FR1122258A
Cited
FR1151437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |