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US3700480A
Expired / Lapsed
US
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Vesicular film
Assignee: Memorex Corp
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Filing: 1971-01-06
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Granted: 1972-10-24
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Expires: 1991-01-06
Abstract
Abstract A METHOD OF MAKING VESICULAR FILM COMPRISING DRYING A SOLUTION OF A DIAZONIUM SALT AND POLYVINYL FORMAL INTO A SUBCOATED TRANSLUCENT SUBSTRATE, AND UNIFORMLY PREEXPOSING THE UNCOATED BASE SIDE OF THE SUBSTRATE TO A CONTROLLED LIGHT SOURCE TO DECOMPOSE DIAZONIUM COMPOUNDS WHICH HAVE INTRUDED INTO OR NEAR THE SUBCOATING WHEREBY BLISTERING OF THE SUBCOAT IS PREVENTED.
Inventors
- 👤 Robert H Murashige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:27
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |