US3361910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optical non-destructive read out memory
Assignee: International Business Machines Corp
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Filing: 1966-06-16
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Granted: 1968-01-02
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Expires: 1986-06-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Frederick F Morehead
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:35
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/705; G11; G11C; G11C13/00; G11C13/04; G11C13/048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A METHOD OF STORING AND ACCESSING INFORMATION WHICH COMPRISES: IRRADIATING A ZINC PHOSPHOR COMPOUND SUITABLY DOPED TO PROVIDED IONIZABLE DONOR LEVELS ADJACENT TO THE CONDUCTION BAND OF SAID COMPOUND AND FIRST AND SECOND DIFFERENT IONIZABLE ACCEPTOR LEVELS ADJACENT TO THE VALENCE BAND OF SAID COMPOUND, ALL OF SAID LEVELS LYING WITHIN THE FORBIDDEN GAP FOR SAID COMPOUND, WITH A RADIATION OF A FIRST WAVELENGTH TO SUBSTANTIALLY FILL SAID DONOR LEVER AND VACATE THE ACCEPTOR LEVER FURTHEST FROM THE VALENCE BAND OF SAID COMPOUND, TO STORE INFORMATION IN SAID COMPOUND, IRRADIATING SAID LAYER WITH LIGHT OF A SECOND WAVELENGTH OF CHARACTERISTIC ENERGY E1 TO CAUSE THE ACCEPTOR LEVEL CLOSEST TO THE VALENCE BAND TO BE EMPTIED AND THE ACCEPTOR LEVEL FURTHEST FROM SAID VALENCE BAND TO BE FILLED,
Claim 2
Independent Claim
127 words
A METHOD OF STORING AND ACCESSING INFORMATION WHICH COMPRISES: IRRADIATING A ZINC PHOSPHOR COMPOUND SUITABLY DOPED TO PROVIDED IONIZABLE DONOR LEVELS ADJACENT TO THE CONDUCTION BAND OF SAID COMPOUND AND FIRST AND SECOND DIFFERENT IONIZABLE ACCEPTOR LEVELS ADJACENT TO THE VALENCE BAND OF SAID COMPOUND, ALL OF SAID LEVELS LYING WITHIN THE FORBIDDEN GAP FOR SAID COMPOUND, WITH A RADIATION OF A FIRST WAVELENGTH TO SUBSTANTIALLY FILL SAID DONOR LEVER AND VACATE THE ACCEPTOR LEVER FURTHEST FROM THE VALENCE BAND OF SAID COMPOUND, TO STORE INFORMATION IN SAID COMPOUND, IRRADIATING SAID LAYER WITH LIGHT OF A SECOND WAVELENGTH OF CHARACTERISTIC ENERGY E1 TO CAUSE THE ACCEPTOR LEVEL CLOSEST TO THE VALENCE BAND TO BE EMPTIED AND THE ACCEPTOR LEVEL FURTHEST FROM SAID VALENCE BAND TO BE FILLED,
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) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |