US3450635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel ferrites containing cobalt,lead and silicon
Assignee: GEORGY KONSTANTINOVICH YAKOVLE
•
Filing: 1965-12-15
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Granted: 1969-06-17
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Expires: 1985-12-15
Abstract
No abstract record available.
Inventors
- 👤 Evgenia Valentinovna Izergina
- 👤 Georgy Konstantinovic Yakovlev
- 👤 Antonina Dmitrievna Zakharova
- 👤 Nikolai Egorovich Komin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:53
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2608; C04B35/2666
Claims Analysis
Total Claims: 0
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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) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |