US3056491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid containers
Assignee: Polaroid Corp
•
Filing: 1958-08-29
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Granted: 1962-10-02
•
Expires: 1978-08-29
Abstract
No abstract record available.
Inventors
- 👤 John E Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:53
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/32; G03C8/34; G03B; G03B17/00; G03B17/48; G03B17/50; G03B17/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A RUPTURABLE, SINGLE USE FLUID CONTAINER HAVING A PAIR OF OPPOSED WALLS SECURED TOGETHER TO PROVIDE A LIQUIDRETAINING CAVITY, SAID CAVITY CONTAINING AN AQUEOUS ALKALINE PHOTOGRAPHIC PROCESSING COMPOSITION, EACH OF SAID WALLS COMPRISING A PLURALITY OF LAYERS, AT LEAST ONE OF SAID WALLS BEING FLEXIBLE AND DEFORMABLE, AT LEAST ONE OF SAID LAYERS BEING SUBSTANTIALLY VAPOR IMPERVIOUS, THE INNER LAYER OF EACH OF SAID WALLS BEING IN CONTACT WITH SAID AQUEOUS ALKALINE PHOTOGRAPHIC PROCESSING COMPOSITION AND COMPRISING A POLYMERIC MATERIAL CONTAINING A MAJOR PORTION OF POLYMERIZED VINYL CHLORIDE, A THERMOPLASTIC ADHESIVE INTERPOSED BETWEEN THE BONDED MARGINAL PORTIONS OF ONE EDGE
Claim 2
Dependent Claim
100 words
A RUPTURABLE, SINGLE USE FLUID CONTAINER HAVING A PAIR OF OPPOSED WALLS SECURED TOGETHER TO PROVIDE A LIQUIDRETAINING CAVITY, SAID CAVITY CONTAINING AN AQUEOUS ALKALINE PHOTOGRAPHIC PROCESSING COMPOSITION, EACH OF SAID WALLS COMPRISING A PLURALITY OF LAYERS, AT LEAST ONE OF SAID WALLS BEING FLEXIBLE AND DEFORMABLE, AT LEAST ONE OF SAID LAYERS BEING SUBSTANTIALLY VAPOR IMPERVIOUS, THE INNER LAYER OF EACH OF SAID WALLS BEING IN CONTACT WITH SAID AQUEOUS ALKALINE PHOTOGRAPHIC PROCESSING COMPOSITION AND COMPRISING A POLYMERIC MATERIAL CONTAINING A MAJOR PORTION OF POLYMERIZED VINYL CHLORIDE, A THERMOPLASTIC ADHESIVE INTERPOSED BETWEEN THE BONDED MARGINAL PORTIONS OF ONE EDGE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-01 | 1966-04-02 | 1966-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-01 | 1970-04-02 | 1970-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-01 | 1974-04-02 | 1974-10-02 | $7700.00 | Window Closed / Lapsed |