Patent US3177145A successfully refreshed from Google Patents.
US3177145A
Expired / Lapsed
US
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Manganese copper ferrite composition containing titanium and germanium and method ofpreparation
Assignee: International Business Machines Corp
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Filing: 1963-02-04
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Granted: 1965-04-06
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Expires: 1983-02-04
Abstract
No abstract record available.
Inventors
- 👤 James M Brownlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:06
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2608; C04B35/2625; C04B35/2616
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
05$A+B$0.15 0.05$C+D$0.50 AND X=1.45-2.00 Y=0.10-1.05 Z=0.20-0.45 A=0.00-0.15 B=0.00-0.15 C=0.00-0.50 D=0.00-0.50 E=0.00-0.20 F=0.00-0.02 G=0.00-0.20 H=0.00-0.03
Claim 2
Dependent Claim
7 words
A FERRITE CERAMIC COMPOSITION HAVING A FORMULA
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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |