US2726154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic product
Assignee: Polaroid Corp
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Filing: 1952-01-08
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Granted: 1955-12-06
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Expires: 1972-01-08
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:56
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/048; F15; F15B; F15B13/00; F15B13/02; F15B13/04; G; G03; G03B; G03B35/00; G03C; G03C8/00; G03C8/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
275 words
A PHOTOGRAPHIC PRODUCT COMPRISING A MULTILAYER STRUCTURE AND INCLUDING AT LEAST A PHOTOSENSITIVE SILVER HALIDE LAYER, AN IMAGE-RECEIVING LAYER, A TRANSPARENT LAYER HAVING A MULTIPLICITY OF LENTICULATIONS ON ONE SURFACE THEREOF AND CONSTITUTING A LENTICULAR LAYER, ANOTHER LAYER WHICH PROVIDES AN OUTER LAYER OF SAID PRODUCT, AND RUPTURABLE CONTAINER HOLDING A LIQUID PROCESSING REAGENT, THE LAYERS OF SAID PRODUCT BEING SUPERPOSED WITH SAID PHOTOSENSITIVE AND IMAGE-RECEIVING LAYERS BEING CARRIED BY ONE SURFACE OF SAID LENTICULAR LAYER AND WITH SAID OUTER LAYER LOCATED TO FACE THAT SIDE OF SAID LENTICULAR LAYER WHICH CARRIES SAID PHOTOSENSITIVE AND IMAGE-RECEIVING LAYERS WHEREBY THE TWO LAST-MENTIONED LAYERS ARE POSITIONED BETWEEN SAID LENTICULAR LAYER AND SAID OUTER LAYER, SAID CONTAINER BEING LOCATED ADJACENT THAT SURFACE OF SAID OUTER LAYER WHICH IS THE NEARER TO SAID LENTICULAR LAYER AND BETWEEN SAID OUTER LAYER AND THAT LAYER OF SAID PRODUCT NEXT ADJACENT TO THE OUTER LAYER AT A POSITION FOR RELEASING ITS LIQUID CONTENT THEREBETWEEN UPON RUPTURE OF THE CONTAINER FOR SPREADING OF SAID LIQUID IN CONTACT WITH SAID OUTER LAYER AND SAID LAYER OF SAID PRODUCT NEXT ADJACENT THERETO AND FOR PERMEATION AT LEAST INTO SAID PHOTOSENSITIVE LAYER, SAID PRODUCT CONTAINING AT LEAST A SILVER HALIDE DEVELOPER SOLUBLE IN SAID REAGENT AND RENDERED EFFECTIVE, UPON RELEASE OF SAID LIQUID, FOR ABSORPTION INTO SAID PHOTOSENSITIVE LAYER TO DEVELOP LATENT IMAGE THEREIN AND FORM AS A RESULT OF SAID DEVELOPMENT A DIFFERENTIAL DISPOSITION OF IMAGE-FORMING COMPONENTS FOR TRANSFER, BY IMBIBITION, TO SAID IMAGE-RECEIVING LAYER FOR PROVIDING THEREIN A REVERSE IMAGE OF SAID LATENT IMAGE, SAID LENTICULAR LAYER AND AT LEAST SAID IMAGE-RECEIVING LAYER BEING SECURED TOGETHER FOR SEPARATION AS A UNIT FROM SAID PRODUCT.
Claim 2
Dependent Claim
275 words
A PHOTOGRAPHIC PRODUCT COMPRISING A MULTILAYER STRUCTURE AND INCLUDING AT LEAST A PHOTOSENSITIVE SILVER HALIDE LAYER, AN IMAGE-RECEIVING LAYER, A TRANSPARENT LAYER HAVING A MULTIPLICITY OF LENTICULATIONS ON ONE SURFACE THEREOF AND CONSTITUTING A LENTICULAR LAYER, ANOTHER LAYER WHICH PROVIDES AN OUTER LAYER OF SAID PRODUCT, AND RUPTURABLE CONTAINER HOLDING A LIQUID PROCESSING REAGENT, THE LAYERS OF SAID PRODUCT BEING SUPERPOSED WITH SAID PHOTOSENSITIVE AND IMAGE-RECEIVING LAYERS BEING CARRIED BY ONE SURFACE OF SAID LENTICULAR LAYER AND WITH SAID OUTER LAYER LOCATED TO FACE THAT SIDE OF SAID LENTICULAR LAYER WHICH CARRIES SAID PHOTOSENSITIVE AND IMAGE-RECEIVING LAYERS WHEREBY THE TWO LAST-MENTIONED LAYERS ARE POSITIONED BETWEEN SAID LENTICULAR LAYER AND SAID OUTER LAYER, SAID CONTAINER BEING LOCATED ADJACENT THAT SURFACE OF SAID OUTER LAYER WHICH IS THE NEARER TO SAID LENTICULAR LAYER AND BETWEEN SAID OUTER LAYER AND THAT LAYER OF SAID PRODUCT NEXT ADJACENT TO THE OUTER LAYER AT A POSITION FOR RELEASING ITS LIQUID CONTENT THEREBETWEEN UPON RUPTURE OF THE CONTAINER FOR SPREADING OF SAID LIQUID IN CONTACT WITH SAID OUTER LAYER AND SAID LAYER OF SAID PRODUCT NEXT ADJACENT THERETO AND FOR PERMEATION AT LEAST INTO SAID PHOTOSENSITIVE LAYER, SAID PRODUCT CONTAINING AT LEAST A SILVER HALIDE DEVELOPER SOLUBLE IN SAID REAGENT AND RENDERED EFFECTIVE, UPON RELEASE OF SAID LIQUID, FOR ABSORPTION INTO SAID PHOTOSENSITIVE LAYER TO DEVELOP LATENT IMAGE THEREIN AND FORM AS A RESULT OF SAID DEVELOPMENT A DIFFERENTIAL DISPOSITION OF IMAGE-FORMING COMPONENTS FOR TRANSFER, BY IMBIBITION, TO SAID IMAGE-RECEIVING LAYER FOR PROVIDING THEREIN A REVERSE IMAGE OF SAID LATENT IMAGE, SAID LENTICULAR LAYER AND AT LEAST SAID IMAGE-RECEIVING LAYER BEING SECURED TOGETHER FOR SEPARATION AS A UNIT FROM SAID PRODUCT.
References Cited (Backward Citations)
FR714629A
Cited
GB416198A
Cited
GB471520A
Cited
US2602742A
Cited
US2602741A
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US2543181A
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US2563342A
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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) | 1958-12-05 | 1959-06-06 | 1959-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-12-05 | 1963-06-06 | 1963-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-12-05 | 1967-06-06 | 1967-12-06 | $7700.00 | Window Closed / Lapsed |