Patent EP0059424A2 successfully refreshed from Google Patents.
Patent US3213302A successfully refreshed from Google Patents.
US3213302A
Expired / Lapsed
US
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Insulated metallic articles
Assignee: General Electric Co
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Filing: 1961-07-12
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Granted: 1965-10-19
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Expires: 1981-07-12
Abstract
No abstract record available.
Inventors
- 👤 Duane L Barney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:28
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/30; C; C23; C23C; C23C22/00; C23C22/73; C23C22/74; H02K3/32; H02K3/34; H02K3/345
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A MAGNETIC CORE FOR USE IN ELECTRICAL APPARATUS COMPRISING A PLURALITY OF STACKED LAMINATIONS HAVING CONDUCTOR SLOTS DISPOSED THEREIN, EACH OF SAID LAMINATIONS HAVING A FIRST INSULATION INCLUDING A FILLER DISPOSED ON OPPOSITE SIDES THEREOF, AND A SECOND INSULATION DISPOSED ON THE WALL SURFACES OF SAID SLOTS, SAID INSULATIONS COMPRISING THE REACTION PRODUCT FORMED IN THE PRESENCE OF HEAT OF GLASSY SODIUM PHOSPHATE AND AN OXIDE DISPOSED ON THE SURFACES OF THE METAL, SAID INSULATIONS BEING CURED TO A HARD GLASSY SUBSTANCE, AND A WINDING INCLUDING CONDUCTOR BARS BONDED TO THE WALLS OF SAID SLOTS BY SAID SECOND INSULATION.
Claim 2
Dependent Claim
99 words
A MAGNETIC CORE FOR USE IN ELECTRICAL APPARATUS COMPRISING A PLURALITY OF STACKED LAMINATIONS HAVING CONDUCTOR SLOTS DISPOSED THEREIN, EACH OF SAID LAMINATIONS HAVING A FIRST INSULATION INCLUDING A FILLER DISPOSED ON OPPOSITE SIDES THEREOF, AND A SECOND INSULATION DISPOSED ON THE WALL SURFACES OF SAID SLOTS, SAID INSULATIONS COMPRISING THE REACTION PRODUCT FORMED IN THE PRESENCE OF HEAT OF GLASSY SODIUM PHOSPHATE AND AN OXIDE DISPOSED ON THE SURFACES OF THE METAL, SAID INSULATIONS BEING CURED TO A HARD GLASSY SUBSTANCE, AND A WINDING INCLUDING CONDUCTOR BARS BONDED TO THE WALLS OF SAID SLOTS BY SAID SECOND INSULATION.
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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |