Patent US3177790A successfully refreshed from Google Patents.
US3177790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing device and method
Assignee: Eastman Kodak Co
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Filing: 1961-02-08
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Granted: 1965-04-13
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Expires: 1981-02-08
Abstract
No abstract record available.
Inventors
- 👤 John R Turner
- 👤 Robert J Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:26
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A WEB PROCESSING DEVICE OF THE TYPE HAVING DEVELOPING, RINSING, FIXING AND WASHING ZONES FOR CONTINUOUSLY PROCESSING A WEB SUCCESSIVELY TRANSPORTED THROUGH SAID ZONES, THE COMBINATION COMPRISING: AN EXTRUSION HOPPER MOUNTED ADJACENT SAID WEB IN SAID DEVELOPING ZONE THROUGH WHICH A VISCOSE DEVELOPER IS EXTRUDED IN A FINITE LAYER ONTO SAID WEB; A DEVELOPING CHAMBER IN SAID DEVELOPING ZONE THROUGH WHICH SAID WEB AND DEVELOPER ARE TRANSPORTED; AND MEANS FOR MAINTAINING THE ATMOSPHERE IN SAID CHAMBER AT A SUBSTANTIALLY CONSTANT WET BULB TEMPERATURE.
Claim 2
Dependent Claim
84 words
IN A WEB PROCESSING DEVICE OF THE TYPE HAVING DEVELOPING, RINSING, FIXING AND WASHING ZONES FOR CONTINUOUSLY PROCESSING A WEB SUCCESSIVELY TRANSPORTED THROUGH SAID ZONES, THE COMBINATION COMPRISING: AN EXTRUSION HOPPER MOUNTED ADJACENT SAID WEB IN SAID DEVELOPING ZONE THROUGH WHICH A VISCOSE DEVELOPER IS EXTRUDED IN A FINITE LAYER ONTO SAID WEB; A DEVELOPING CHAMBER IN SAID DEVELOPING ZONE THROUGH WHICH SAID WEB AND DEVELOPER ARE TRANSPORTED; AND MEANS FOR MAINTAINING THE ATMOSPHERE IN SAID CHAMBER AT A SUBSTANTIALLY CONSTANT WET BULB TEMPERATURE.
References Cited (Backward Citations)
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Cited
US1751881A
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US1728361A
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US2269169A
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US2651245A
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US2681294A
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US2949839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |