Patent US3187309A successfully refreshed from Google Patents.
US3187309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer memory
Assignee: International Business Machines Corp
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Filing: 1963-08-16
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Granted: 1965-06-01
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Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 Dodd Paul David
- 👤 George L Owens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:28
CPC Classifications
G; G11; G11C; G11C17/00; G11C17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A COMPUTER MEMORY, COMPRISING: A FIRST PLANAR MATRIX HAVING A FIXED NUMBER OF OVERLAPPING CONDUCTORS AND A CAPACITIVE JUNCTION ASSOCIATED WITH EAC POINT OF OVERLAP, EACH JUNCTION FORMED BY EXTENSION OF THE CONDUCTORS AND CAPABLE OF BEING REMOVED IF NOT REQUIRED FOR STORAGE; A SECOND PLANAR MATRIX HAVING THE SAME NUMBER OF OVERLAPPING CONDUCTORS AS SAID FIRST PLANAR MATRIX AND A CAPACITIVE JUNCTION ASSOCIATED WITH EACH POINT OF OVERLAP, THE JUNCTIONS BEING FORMED BY EXTENSIONS OF THE CONDUCTORS, SAID SECOND MATRIX HAVING REMOVED THOSE JUNCTIONS CORRESPONDING TO THE JUNCTIONS REMAINING IN SAID FIRST MATRIX; AND, A SINGLE TERMINATING IMPEDANCE FOR A PLURALITY OF CONDUCTORS OF BOTH SAID MATRICES CONNECTED TO SAID MATRICES SUCH THAT THEY COMPRISE A SINGLE MEMORY PLANE.
Claim 2
Dependent Claim
120 words
A COMPUTER MEMORY, COMPRISING: A FIRST PLANAR MATRIX HAVING A FIXED NUMBER OF OVERLAPPING CONDUCTORS AND A CAPACITIVE JUNCTION ASSOCIATED WITH EAC POINT OF OVERLAP, EACH JUNCTION FORMED BY EXTENSION OF THE CONDUCTORS AND CAPABLE OF BEING REMOVED IF NOT REQUIRED FOR STORAGE; A SECOND PLANAR MATRIX HAVING THE SAME NUMBER OF OVERLAPPING CONDUCTORS AS SAID FIRST PLANAR MATRIX AND A CAPACITIVE JUNCTION ASSOCIATED WITH EACH POINT OF OVERLAP, THE JUNCTIONS BEING FORMED BY EXTENSIONS OF THE CONDUCTORS, SAID SECOND MATRIX HAVING REMOVED THOSE JUNCTIONS CORRESPONDING TO THE JUNCTIONS REMAINING IN SAID FIRST MATRIX; AND, A SINGLE TERMINATING IMPEDANCE FOR A PLURALITY OF CONDUCTORS OF BOTH SAID MATRICES CONNECTED TO SAID MATRICES SUCH THAT THEY COMPRISE A SINGLE MEMORY PLANE.
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |