US2762776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ferrospinel bodies and methods of making same
Assignee: RCA Corp
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Filing: 1953-10-05
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Granted: 1956-09-11
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Expires: 1973-10-05
Abstract
No abstract record available.
Inventors
- 👤 Robert E Hurley
- 👤 Jr John O Simpkiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:06
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/032; H01F1/10; H01F1/11; H01F1/113
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A FERROSPINEL-FORMING COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF INTIMATELY MIXED METALLIC OXIDES AND 0.5 TO 8.0 PERCENT BY WEIGHT OF AN ORGANIC BINDER, SAID ORGANIC BINDER BEING A SUBSTANCE WHICH IS HIGHLY VISCOUS AT ORDINARY ROOM TEMPERATURES, RELATIVELY FREE-FLOWING AND NON-VISCOUS AT ABOUT 45* TO 150* C. AND VOLATILIZABLE AT A TEMPERATURE BELOW ABOUT 400* C. SELECTED FROM THE GROUP CONSISTING OF DIETHYLENE GLYCOL ESTERS OF ROSIN AND METHYL ESTERS OF ROSIN.
Claim 2
Dependent Claim
72 words
A FERROSPINEL-FORMING COMPOSITION OF MATTER CONSISTING ESSENTIALLY OF INTIMATELY MIXED METALLIC OXIDES AND 0.5 TO 8.0 PERCENT BY WEIGHT OF AN ORGANIC BINDER, SAID ORGANIC BINDER BEING A SUBSTANCE WHICH IS HIGHLY VISCOUS AT ORDINARY ROOM TEMPERATURES, RELATIVELY FREE-FLOWING AND NON-VISCOUS AT ABOUT 45* TO 150* C. AND VOLATILIZABLE AT A TEMPERATURE BELOW ABOUT 400* C. SELECTED FROM THE GROUP CONSISTING OF DIETHYLENE GLYCOL ESTERS OF ROSIN AND METHYL ESTERS OF ROSIN.
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) | 1959-09-11 | 1960-03-12 | 1960-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-11 | 1964-03-12 | 1964-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-11 | 1968-03-12 | 1968-09-11 | $7700.00 | Window Closed / Lapsed |