US2982732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrite composition containing titanium and nickel
Assignee: International Business Machines Corp
•
Filing: 1957-12-30
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Granted: 1961-05-02
•
Expires: 1977-12-30
Abstract
No abstract record available.
Inventors
- 👤 James M Brownlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:19
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2608; C04B35/2625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A RECTANGULAR HYSTERESIS LOOP FERROSPINEL SYSTEM CONSISTING ESSENTIALLY OF MGW, NIX, TIY, FEZO4 WHERE W VARIES FROM 0.70 TO 1.22, X FROM 0.01 TO 0.60, Y FROM 0.10 TO 0.40 AND Z FROM 1.30 TO 1.80, SAID FERROSPINEL HAVING A BR/BS RATIO OF GREATER THAN 0.7.
Claim 2
Dependent Claim
46 words
A RECTANGULAR HYSTERESIS LOOP FERROSPINEL SYSTEM CONSISTING ESSENTIALLY OF MGW, NIX, TIY, FEZO4 WHERE W VARIES FROM 0.70 TO 1.22, X FROM 0.01 TO 0.60, Y FROM 0.10 TO 0.40 AND Z FROM 1.30 TO 1.80, SAID FERROSPINEL HAVING A BR/BS RATIO OF GREATER THAN 0.7.
References Cited (Backward Citations)
US2579978A
Cited
US2565861A
Cited
US2659698A
Cited
US2736708A
Cited
GB697219A
Cited
GB735375A
Cited
GB737284A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |