Patent US3977876A successfully refreshed from Google Patents.
US3977876A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of processing photographic material
Assignee: Monrick Holdings Ltd
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Filing: 1975-01-07
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Granted: 1976-08-31
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Expires: 1995-01-07
Abstract
Abstract A method and apparatus for the processing of photographic material in which the material is mounted arcuately in a tubular carrier which is horizontally disposed, charged in its lower portion with processing liquid, and rotated about its longitudinal axis while at the same time being oscillated in the direction of that axis. In the apparatus the carrier rests on a base with means on the carrier and on the base interengagable to oscillate the carrier when it is rotated.
Inventors
- 👤 Simon Ratowsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:02
CPC Classifications
G; G03; G03D; G03D13/00; G03D13/02; G03D13/04; G03D13/046; B; B01; B01F; B01F29/00; B01F29/30; B01F29/31; B01F31/00; B01F31/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A method of processing photographic material of the sheet or roll type, comprising the steps of: mounting the material arcuately within a tubular carrier; horizontally disposing the carrier with respect to the longitudinal axis of the carrier; introducing a predetermined quantity of processing liquid into the lower portion of the horizontally disposed carrier whereby the photographic material is contacted by the liquid on rotation of the carrier and closing the carrier; rotating the carrier about its horizontal longitudinal axis and simultaneously oscillating the carrier in the direction of said axis in the form of a sine wave thereby causing the processing liquid in the carrier to move longitudinally along said axis and over said photographic material; and after a predetermined time interval, removing the liquid from the carrier.
Claim 2
Independent Claim
128 words
A method of processing photographic material of the sheet or roll type, comprising the steps of: mounting the material arcuately within a tubular carrier; horizontally disposing the carrier with respect to the longitudinal axis of the carrier; introducing a predetermined quantity of processing liquid into the lower portion of the horizontally disposed carrier whereby the photographic material is contacted by the liquid on rotation of the carrier and closing the carrier; rotating the carrier about its horizontal longitudinal axis and simultaneously oscillating the carrier in the direction of said axis in the form of a sine wave thereby causing the processing liquid in the carrier to move longitudinally along said axis and over said photographic material; and after a predetermined time interval, removing the liquid from the carrier.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |