US3222756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Techniques associated with inductive sensing of tunnel diode memory cells
Assignee: Individual
•
Filing: 1961-08-23
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Granted: 1965-12-14
•
Expires: 1981-08-23
Abstract
No abstract record available.
Inventors
- 👤 Melvin M Kanfman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:22
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/313; H03K3/315; G; G11; G11C; G11C11/00; G11C11/21; G11C11/34; G11C11/36; G11C11/38; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49069
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
THE METHOD OF MAKING A TRANSFORMER UNIT FOR SENSING TUNNEL DIODE MEMORY CELLS, COMPRISING THE STEPS OF: PROVIDING FIRST AND SECOND FERRITE BODIES, EACH OF SAID BODIES HAVING OPPOSED FLAT SURFACES; COATING ONE FERRITE BODY WITH AN ACID RESISTANT MATERIAL TO PREVENT ABSORPTION OF ACID BY SAID FERRITE BODY; CEMENTING A THIN COPPER PLATE TO ONE OF THE OPPOSED FLAT SURFACES OF THE COATED FERRITE BODY; PHOTO-ETCHING IN THE COPPER PLATE A TRANSFORMER SECONDARY AND A PLURALITY OF TRANSFORMER PRIMARIES ADJACENT TO THE SECONDARY; ATTACHING A SECOND THIN COPPER SHEET TO THE OTHER OF THE OPPOSED FLAT SURFACES OF THE COATED FERRITE; ATTACHING THE UNCOATED FERRITE TO THE COATED FERRITE WITH ONE OF THE FLAT SIDES OF THE UNCOATED FERRITE ADJACENT THE TRANSFORMER SIDE OF SAID COATED FERRITE.
Claim 2
Independent Claim
128 words
THE METHOD OF MAKING A TRANSFORMER UNIT FOR SENSING TUNNEL DIODE MEMORY CELLS, COMPRISING THE STEPS OF: PROVIDING FIRST AND SECOND FERRITE BODIES, EACH OF SAID BODIES HAVING OPPOSED FLAT SURFACES; COATING ONE FERRITE BODY WITH AN ACID RESISTANT MATERIAL TO PREVENT ABSORPTION OF ACID BY SAID FERRITE BODY; CEMENTING A THIN COPPER PLATE TO ONE OF THE OPPOSED FLAT SURFACES OF THE COATED FERRITE BODY; PHOTO-ETCHING IN THE COPPER PLATE A TRANSFORMER SECONDARY AND A PLURALITY OF TRANSFORMER PRIMARIES ADJACENT TO THE SECONDARY; ATTACHING A SECOND THIN COPPER SHEET TO THE OTHER OF THE OPPOSED FLAT SURFACES OF THE COATED FERRITE; ATTACHING THE UNCOATED FERRITE TO THE COATED FERRITE WITH ONE OF THE FLAT SIDES OF THE UNCOATED FERRITE ADJACENT THE TRANSFORMER SIDE OF SAID COATED FERRITE.
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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) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |