Patent US2886530A successfully refreshed from Google Patents.
US2886530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing ceramic ferrites
Assignee: Individual
•
Filing: 1955-07-19
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Granted: 1959-05-12
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Expires: 1975-07-19
Abstract
No abstract record available.
Inventors
- 👤 Greger Herbert Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:22
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2608; C04B35/2625
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
IN A METHOD OF REPRODUCIBLY MANUFACTURING FERRITIC CERAMIC PRODUCTS WITH CORRESPONDING ELECTRIC AND MAGNETIC PROPERTIES FROM DRY MATERIALS, THE STEPS OF MIXING A BATCH OF PARTICLES CONSISTING ESSENTIALLY OF 20-80% FE2O3, 20-80, MGO, AND 0-4% MNO WITH VOLATILE LIQUID HYDROCARBON SOLVENT AND WITH A FATTY ACID CONTAINING 4-18 CARBON ATOMS TO FORM A SLURRY WITH THE SURFACES OF THE PARTICLES HAVING LIPOPHILIC PROPERTIES, THE ACID BEING FROM 2-10% OF THE WEIGHT OF THE BATCH, REMOVING EXCESS SOLVENT TO DRY THE RESULTING PRODUCT, HOMOGENTIZING THE RESULTING PRODUCT WITH A SMALL AMOUNT OF SAID SOLVENT SUFFICIENT TO MAKE THE LAST SAID PRODUCT INTO A SHAPABLE PLASTIC MASS, HOMOGENIZING THE PLASTIC MASS, FORMING THE HOMOGENIZED PLASTIC MASS INTO A SHAPE, AND FIRING SAID SHAPE AT A TEMPERATURE OF APPROXIMATELY 1200*-1450* C. TO SOLIDIFY IT.
Claim 2
Dependent Claim
131 words
IN A METHOD OF REPRODUCIBLY MANUFACTURING FERRITIC CERAMIC PRODUCTS WITH CORRESPONDING ELECTRIC AND MAGNETIC PROPERTIES FROM DRY MATERIALS, THE STEPS OF MIXING A BATCH OF PARTICLES CONSISTING ESSENTIALLY OF 20-80% FE2O3, 20-80, MGO, AND 0-4% MNO WITH VOLATILE LIQUID HYDROCARBON SOLVENT AND WITH A FATTY ACID CONTAINING 4-18 CARBON ATOMS TO FORM A SLURRY WITH THE SURFACES OF THE PARTICLES HAVING LIPOPHILIC PROPERTIES, THE ACID BEING FROM 2-10% OF THE WEIGHT OF THE BATCH, REMOVING EXCESS SOLVENT TO DRY THE RESULTING PRODUCT, HOMOGENTIZING THE RESULTING PRODUCT WITH A SMALL AMOUNT OF SAID SOLVENT SUFFICIENT TO MAKE THE LAST SAID PRODUCT INTO A SHAPABLE PLASTIC MASS, HOMOGENIZING THE PLASTIC MASS, FORMING THE HOMOGENIZED PLASTIC MASS INTO A SHAPE, AND FIRING SAID SHAPE AT A TEMPERATURE OF APPROXIMATELY 1200*-1450* C. TO SOLIDIFY IT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |