US3360466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-generating magnetic ink compositions
Assignee: EIDP Inc
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Filing: 1964-11-18
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Granted: 1967-12-26
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Expires: 1984-11-18
Abstract
No abstract record available.
Inventors
- 👤 Oliver A Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:16
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/14; H01F41/16; H01F1/00; H01F1/44; H01F1/445
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A HEAT-GENERATING MAGNETIC INK CONSISTING ESSENTIALLY, ON A WEIGHT BASIS, OF 0.9 TO 4 PARTS OF A FINELY DIVEDED MAGNETIC PIGMENT POSSESSING A HIGH ENERGY LOSS AND A COERCIVITY OF 2 TO 20 OERSTEDS PER 1 PART OF A LIQUID VEHICLE HAVING DRYING PROPERTIES AND CONTAINING A METAL COMPOUND DRIER DISSOLVED THEREIN, SAID PIGMENT BEING A METAL FERRITE CONTAINING, ON AN OXIDE BASIS, 3 TO 30% NIO, 2 TO 20% ZNO, 0 TO 5% MNO AND AT LEAST 66% FE2O3.
Claim 2
Dependent Claim
80 words
A HEAT-GENERATING MAGNETIC INK CONSISTING ESSENTIALLY, ON A WEIGHT BASIS, OF 0.9 TO 4 PARTS OF A FINELY DIVEDED MAGNETIC PIGMENT POSSESSING A HIGH ENERGY LOSS AND A COERCIVITY OF 2 TO 20 OERSTEDS PER 1 PART OF A LIQUID VEHICLE HAVING DRYING PROPERTIES AND CONTAINING A METAL COMPOUND DRIER DISSOLVED THEREIN, SAID PIGMENT BEING A METAL FERRITE CONTAINING, ON AN OXIDE BASIS, 3 TO 30% NIO, 2 TO 20% ZNO, 0 TO 5% MNO AND AT LEAST 66% FE2O3.
References Cited (Backward Citations)
US3082171A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-25 | 1971-06-26 | 1971-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-25 | 1975-06-26 | 1975-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-25 | 1979-06-26 | 1979-12-26 | $7700.00 | Window Closed / Lapsed |