US2982650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic processes and products
Assignee: Polaroid Corp
•
Filing: 1955-07-22
•
Granted: 1961-05-02
•
Expires: 1975-07-22
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:21
CPC Classifications
G; G03; G03D; G03D9/00; G03C; G03C8/00; G03C8/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A PHOTOGRAPHIC PRODUCT IN THE FORM OF A FILM UNIT COMPRISING A PAIR OF RIGID PLATES, PIVOT MEANS AT ONE END OF SAID PLATES CONSTRAINING SAID PLATES FOR PIVOTAL MOVEMENT WITH RESPECT TO ONE ANOTHER BETWEEN REMOTE AND SUPERPOSED RELATIVE POSITIONS, SAID PLATES, WHEN IN SUPERPOSED POSITION, DEFINING A THIN REGION THEREBETWEEN WITHIN WHICH AN AQUEOUS FLUID MAY BE SPREAD IN ORDER TO PROCESS A SILVER HALIDE SALT WITH A SILVER HALIDE DEVELOPER FOR THE PRODUCTION OF A VISIBLE PRINT, THE SURFACE OF ONE OF SAID PLATES BEING PROVIDED AT THE LATERAL MARGINS OF SAID REGION WITH A PAIR OF STRIPS FOR CONFINING SAID FLUID TO SAID REGION BETWEEN SAID PLATES, AT LEAST ONE OF SAID PLATES BEING TRANSPARENT TO PERMIT OBSERVATION OF SAID PRINT WHILE SAID PLATES ARE SUPERPOSED, SAID FILM UNIT CARRYING AT LEAST ONE OF SAID SALT AND SAID DEVELOPER AND
Claim 2
Dependent Claim
144 words
A PHOTOGRAPHIC PRODUCT IN THE FORM OF A FILM UNIT COMPRISING A PAIR OF RIGID PLATES, PIVOT MEANS AT ONE END OF SAID PLATES CONSTRAINING SAID PLATES FOR PIVOTAL MOVEMENT WITH RESPECT TO ONE ANOTHER BETWEEN REMOTE AND SUPERPOSED RELATIVE POSITIONS, SAID PLATES, WHEN IN SUPERPOSED POSITION, DEFINING A THIN REGION THEREBETWEEN WITHIN WHICH AN AQUEOUS FLUID MAY BE SPREAD IN ORDER TO PROCESS A SILVER HALIDE SALT WITH A SILVER HALIDE DEVELOPER FOR THE PRODUCTION OF A VISIBLE PRINT, THE SURFACE OF ONE OF SAID PLATES BEING PROVIDED AT THE LATERAL MARGINS OF SAID REGION WITH A PAIR OF STRIPS FOR CONFINING SAID FLUID TO SAID REGION BETWEEN SAID PLATES, AT LEAST ONE OF SAID PLATES BEING TRANSPARENT TO PERMIT OBSERVATION OF SAID PRINT WHILE SAID PLATES ARE SUPERPOSED, SAID FILM UNIT CARRYING AT LEAST ONE OF SAID SALT AND SAID DEVELOPER AND
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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) | 1964-05-01 | 1964-10-31 | 1965-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-01 | 1968-10-31 | 1969-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-01 | 1972-10-31 | 1973-05-02 | $7700.00 | Window Closed / Lapsed |