US3370981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electron beam recording medium with amino-azo indicator and halogenated polymer coating
Assignee: 3M Co
•
Filing: 1963-09-23
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Granted: 1968-02-27
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Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 Jr William O Ney
- 👤 Jr Joseph A Wiese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:23
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; G03C1/733; Y; Y10; Y10S; Y10S428/00; Y10S428/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A RECORDING MEDIUM WHICH COMPRISES AN ELECTRICALLY CONDUCTIVE METALLIC SUBSTRATE AND, SUPERIMPOSED THEREON, A LAYER WHICH IS ESSENTIALLY INSENSTIVE TO VISIBLE LIGHT, WHICH IS STABLE UNDER VACUUM CONDITIONS USED IN ELECTRON BEAM RECORDING AND WHICH COMPRISES AN ACID-SENSITIVE OIL SOLUBLE AMINO AZO INDICATOR IN BASIC FORM AND CAPABLE OF CHANGING COLOR AT A PH BELOW ABOUT 7 AND, AS THE SOLE REMAINING CONSITUENT CAPABLE OFLIBERATING HYDROGEN HALIDE UNDER EXPOSURE TO AN ELECTRON BEAM A NORMALLY SOLID, HIGHLY HALOGENATED POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 1000 AND HAVING AT LEAST 25 WEIGHT PERCENT OF LABILE HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE.
Claim 2
Dependent Claim
107 words
A RECORDING MEDIUM WHICH COMPRISES AN ELECTRICALLY CONDUCTIVE METALLIC SUBSTRATE AND, SUPERIMPOSED THEREON, A LAYER WHICH IS ESSENTIALLY INSENSTIVE TO VISIBLE LIGHT, WHICH IS STABLE UNDER VACUUM CONDITIONS USED IN ELECTRON BEAM RECORDING AND WHICH COMPRISES AN ACID-SENSITIVE OIL SOLUBLE AMINO AZO INDICATOR IN BASIC FORM AND CAPABLE OF CHANGING COLOR AT A PH BELOW ABOUT 7 AND, AS THE SOLE REMAINING CONSITUENT CAPABLE OFLIBERATING HYDROGEN HALIDE UNDER EXPOSURE TO AN ELECTRON BEAM A NORMALLY SOLID, HIGHLY HALOGENATED POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST ABOUT 1000 AND HAVING AT LEAST 25 WEIGHT PERCENT OF LABILE HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE.
References Cited (Backward Citations)
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Cited
US2229155A
Cited
US2489537A
Cited
US2727828A
Cited
US2855266A
Cited
US2748288A
Cited
US3252835A
Cited
US3238020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-26 | 1971-08-28 | 1972-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-26 | 1975-08-28 | 1976-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-26 | 1979-08-28 | 1980-02-27 | $7700.00 | Window Closed / Lapsed |