US3262122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic memory
Assignee: International Business Machines Corp
•
Filing: 1963-05-01
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Granted: 1966-07-19
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Expires: 1983-05-01
Abstract
No abstract record available.
Inventors
- 👤 Fleisher Harold
- 👤 Thomas J Harris
- 👤 Shapiro Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:38
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/80; H04N5/82; B; B23; B23K; B23K26/00; B23K26/02; B23K26/06; B23K26/064; B23K26/0643; B23K26/0648; B23K26/0665; B23K26/08; B23K26/083; B23K26/0838; B23K26/0846; B23K26/14; B23K26/1423; B23K26/36; B23K26/361; G; G02; G02F; G02F1/00; G02F1/29; G03; G03G; G03G5/00; G03G5/02; G03G5/022; G06; G06K; G06K1/00; G06K1/12; G06K1/126; G11; G11B; G11B11/00; G11B11/03; G11B11/10; G11B11/105; G11B11/10502; G11B7/00; G11B7/002; G11B7/003; G11B7/08; G11B7/085; B23K2103/00; B23K2103/30; B23K2103/42; B23K2103/50; Y; Y10; Y10S; Y10S101/00; Y10S101/37; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A METHOD FOR RECORDING INFORMATION IN A THERMOPLASTIC MEDIUM IN THE FORM OF DEPRESSED DISCRETE AREAS THEREIN COMPRISING: PROVIDING A CONTINUOUS WAVE LASER LIGHT BEAM; PROVIDING A THERMOPLASTIC MEDIUM HAVING A SURFACE UNIFORMLY CAPABLE OF CONTRACTING TO FORM A DEPRESSION IN THE SURFACE WHEN IT IS LOCALLY HEATED IN A DISCRETE AREA TO THE MELTING POINT OF THE THERMOPLASTIC; APPLYING SAID BEAM ONTO SAID SURFACE OF THE THERMOPLASTIC MEDIUM THROUGH A VARIABLE FOCUS LENS; AND VARYING THE SAID VARIABLE FOCUS LENS BY A HIGH VOLTAGE IN FORMATION SOURCE WHEREBY THE BEAM IS DIRECTED TO SAID THERMOPLASTIC SURFACE IN FOCUS CAUSING MELTING AND CONTRACTINH OF THE SAID MEDIUM AT THAT POINT OR IN DEFOCUS WHICH CAUSES NO PHYSICAL CHANGE IN SAID MEDIUM.
Claim 2
Independent Claim
121 words
A METHOD FOR RECORDING INFORMATION IN A THERMOPLASTIC MEDIUM IN THE FORM OF DEPRESSED DISCRETE AREAS THEREIN COMPRISING: PROVIDING A CONTINUOUS WAVE LASER LIGHT BEAM; PROVIDING A THERMOPLASTIC MEDIUM HAVING A SURFACE UNIFORMLY CAPABLE OF CONTRACTING TO FORM A DEPRESSION IN THE SURFACE WHEN IT IS LOCALLY HEATED IN A DISCRETE AREA TO THE MELTING POINT OF THE THERMOPLASTIC; APPLYING SAID BEAM ONTO SAID SURFACE OF THE THERMOPLASTIC MEDIUM THROUGH A VARIABLE FOCUS LENS; AND VARYING THE SAID VARIABLE FOCUS LENS BY A HIGH VOLTAGE IN FORMATION SOURCE WHEREBY THE BEAM IS DIRECTED TO SAID THERMOPLASTIC SURFACE IN FOCUS CAUSING MELTING AND CONTRACTINH OF THE SAID MEDIUM AT THAT POINT OR IN DEFOCUS WHICH CAUSES NO PHYSICAL CHANGE IN SAID MEDIUM.
References Cited (Backward Citations)
US2616961A
Cited
US3120991A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |