US3397393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Capacitor read-only memory with plural information and ground planes
Assignee: International Business Machines Corp
•
Filing: 1965-08-10
•
Granted: 1968-08-13
•
Expires: 1985-08-10
Abstract
No abstract record available.
Inventors
- 👤 Paul H Palmateer
- 👤 Wilbur D Pricer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:05
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A CAPACITOR READ-ONLY MEMORY COMPRISING: (A) A DRIVE PLANE INCLUDING A PLURALITY OF DRIVEN LINES THEREON, (B) A SENSE PLANE PARALLEL TO BUT SPACED FROM THE DRIVE PLANE, THE SENSE PLANE HAVING A PLURALITY OF SENSE LINES THEREON POSITIONED TO INTERSECT WITHOUT PHYSICALLY CONTACTING THE DRIVE LINES TO CREATE A PLURALITY OF INTERSECTIONS CAPABLE OF PROVIDING A CAPACTIVE COUPLING. (C) AN INFORMATION PLANE POSITIONED BETWEEN THE DRIVE PLANE AND THE SENSE PLANE, THE INFORMATION PLANE CARRYING MEANS FOR PERMANENTLY BUT SELECTIVELY VARYING THE CAPACTIVE COUPLING AT EACH OF THE INTERSECTIONS, (D) SYMMETRICAL GROUND PLANES POSITIONED ON OPPOSITE SIDES OF THE DRIVE PLANE, AND (E) MEANS PERMANENTLY LAMINATING ALL OF THE AFORESAID PLANES TOGETHER.
Claim 2
Dependent Claim
113 words
A CAPACITOR READ-ONLY MEMORY COMPRISING: (A) A DRIVE PLANE INCLUDING A PLURALITY OF DRIVEN LINES THEREON, (B) A SENSE PLANE PARALLEL TO BUT SPACED FROM THE DRIVE PLANE, THE SENSE PLANE HAVING A PLURALITY OF SENSE LINES THEREON POSITIONED TO INTERSECT WITHOUT PHYSICALLY CONTACTING THE DRIVE LINES TO CREATE A PLURALITY OF INTERSECTIONS CAPABLE OF PROVIDING A CAPACTIVE COUPLING. (C) AN INFORMATION PLANE POSITIONED BETWEEN THE DRIVE PLANE AND THE SENSE PLANE, THE INFORMATION PLANE CARRYING MEANS FOR PERMANENTLY BUT SELECTIVELY VARYING THE CAPACTIVE COUPLING AT EACH OF THE INTERSECTIONS, (D) SYMMETRICAL GROUND PLANES POSITIONED ON OPPOSITE SIDES OF THE DRIVE PLANE, AND (E) MEANS PERMANENTLY LAMINATING ALL OF THE AFORESAID PLANES TOGETHER.
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) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |