Patent US2846309A successfully refreshed from Google Patents.
US2846309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic products
Assignee: Polaroid Corp
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Filing: 1952-07-17
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Granted: 1958-08-05
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Expires: 1972-07-17
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:30
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/32; G03C8/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A PHOTOGRAPHIC ASSEMBLAGE COMPRISING A SHEET AND AT LEAST A CONTAINER ON A SURFACE THEREOF, SAID SHEET PROVIDING AT LEAST A FRAME, SAID CONTAINER INCLUDING A PLURALITY OF WALL PORTIONS PREDETERMINED ADJACENT SECTIONS OF WHICH ARE JOINED TOGETHER TO DEFINE A VAVITY, AND A PREDETERMINED QUANTITY OF PHOTOSENSITIVE SILVER HALIDE EMULSION WITHIN SAID CAVITY, A FIRST SECTION AND A SECOND SECTION OF SAID WALL PORTIONS DEFINING A MOUTH COMMUNICATING WITH SAID CAVITY, SAID FIRST AND SECOND SECTIONS BEING JOINED, THE BONDING FORCES BETWEEN SAID PREDETERMINED SECTIONS BEING GREATER THAN THE BONDING FORCES BETWEEN SAID FIRST SECTION AND SAID SECOND SECTION, SAID SILVER HALIDE EMULSION, WHEN OPPOSED COMPRESSIONAL FORCES ARE APPLIED TO SAID CONTAINER, SEPARATING SAID FIRST AND SECOND SECTIONS IN ORDER TO BE EJECTED FROM SAID CAVITY THROUGH SAID MOUTH AND TO BE SPREAD IN A UNIFORMLY THIN LAYER FROM ONE EDGE OF SAID FRAME TOWARD THE OPPOSITE EDGE THEREOF.
Claim 2
Dependent Claim
150 words
A PHOTOGRAPHIC ASSEMBLAGE COMPRISING A SHEET AND AT LEAST A CONTAINER ON A SURFACE THEREOF, SAID SHEET PROVIDING AT LEAST A FRAME, SAID CONTAINER INCLUDING A PLURALITY OF WALL PORTIONS PREDETERMINED ADJACENT SECTIONS OF WHICH ARE JOINED TOGETHER TO DEFINE A VAVITY, AND A PREDETERMINED QUANTITY OF PHOTOSENSITIVE SILVER HALIDE EMULSION WITHIN SAID CAVITY, A FIRST SECTION AND A SECOND SECTION OF SAID WALL PORTIONS DEFINING A MOUTH COMMUNICATING WITH SAID CAVITY, SAID FIRST AND SECOND SECTIONS BEING JOINED, THE BONDING FORCES BETWEEN SAID PREDETERMINED SECTIONS BEING GREATER THAN THE BONDING FORCES BETWEEN SAID FIRST SECTION AND SAID SECOND SECTION, SAID SILVER HALIDE EMULSION, WHEN OPPOSED COMPRESSIONAL FORCES ARE APPLIED TO SAID CONTAINER, SEPARATING SAID FIRST AND SECOND SECTIONS IN ORDER TO BE EJECTED FROM SAID CAVITY THROUGH SAID MOUTH AND TO BE SPREAD IN A UNIFORMLY THIN LAYER FROM ONE EDGE OF SAID FRAME TOWARD THE OPPOSITE EDGE THEREOF.
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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) | 1961-08-04 | 1962-02-03 | 1962-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-04 | 1966-02-03 | 1966-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-04 | 1970-02-03 | 1970-08-05 | $7700.00 | Window Closed / Lapsed |