Patent US2653085A successfully refreshed from Google Patents.
US3371301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic core unit
Assignee: TDK Corp
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Filing: 1966-11-07
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Granted: 1968-02-27
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Expires: 1986-11-07
Abstract
No abstract record available.
Inventors
- 👤 Hisano Takao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:34
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2658; H; H01; H01F; H01F17/00; H01F17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
A MAGNETIC CORE UNIT COMPRISING: A BOBBIN HAVING A TUBULAR BOBBIN BODY HAVING A CYLINDRICAL HOLE MADE WITHIN IT, FLANGES PROVIDED AT THE RESPECTIVE ENDS OF SAID BOBBIN BODY, TERMINAL FIXING BASES PROVIDED IN PARALLEL WITH EACH OTHER IN THE HORIZONTAL DIRECTION IN THE UPPER PARTS OF SAID RESPECTIVE FLANGES AND A PLURALITY OF CONNECTING TERMINAL RODS ERECTED ON THE UPPER SURFACES OF SAID RESPECTIVE TERMINAL FIXING BASES; A CORE FORMED OF TWO CORE PIECES JOINTED WITH EACH OTHER ON THE CONTACT SURFACE SO AS TO FORM A BOX HAVING AN OPENING IN THE UPPER PART, HAVING A SPACE WITHIN IT AND PROVIDED WITH A COLUMNAR PART PROJECTING INWARD ACROSS SAID SPACE FROM THE SIDE WALL OF EACH OF SAID CORE PIECES, SAID COLUMNAR PARTS OF
Claim 2
Dependent Claim
126 words
A MAGNETIC CORE UNIT COMPRISING: A BOBBIN HAVING A TUBULAR BOBBIN BODY HAVING A CYLINDRICAL HOLE MADE WITHIN IT, FLANGES PROVIDED AT THE RESPECTIVE ENDS OF SAID BOBBIN BODY, TERMINAL FIXING BASES PROVIDED IN PARALLEL WITH EACH OTHER IN THE HORIZONTAL DIRECTION IN THE UPPER PARTS OF SAID RESPECTIVE FLANGES AND A PLURALITY OF CONNECTING TERMINAL RODS ERECTED ON THE UPPER SURFACES OF SAID RESPECTIVE TERMINAL FIXING BASES; A CORE FORMED OF TWO CORE PIECES JOINTED WITH EACH OTHER ON THE CONTACT SURFACE SO AS TO FORM A BOX HAVING AN OPENING IN THE UPPER PART, HAVING A SPACE WITHIN IT AND PROVIDED WITH A COLUMNAR PART PROJECTING INWARD ACROSS SAID SPACE FROM THE SIDE WALL OF EACH OF SAID CORE PIECES, SAID COLUMNAR PARTS OF
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |