US3099623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the separation of solid particles from developing solutions for exposed films and the like
Assignee: Agfa Gevaert NV
•
Filing: 1959-08-19
•
Granted: 1963-07-30
•
Expires: 1979-08-19
Abstract
No abstract record available.
Inventors
- 👤 Kaufer Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:27
CPC Classifications
G; G03; G03D; G03D3/00; G03D3/02; G03D3/06; G03D3/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
208 words
AN APPARATUS FOR REMOVING SOLID PARTICLES FORM DEVELOPING SOLUTIONS FOR EXPOSED FILMS AND THE LIKE WHICH COMPRISES, IN COMBINATION: A TANK HAVING AN UPPER END AND A LOWER END; A SUPPLY OF DEVELOPING SOLUTION IN THE TANK HAVING AN UPPER LEVEL; FIRST AND SECOND CONNECTING CHANNEL MEANS COMMUNICATING, RESPECTIVELY, WITH THE UPPER AND LOWER END OF SAID TANK; BYPASS CHANNEL MEANS COMMUNICATING WITH THE FIRST AND SECOND CHANNEL MEANS AND FORMING WITH THE LATTER A PASSAGE FOR THE FLOW OF SOLUTION FROM ONE END OF SAID TANK THROUGH THE CHANNEL MEANS AND INTO THE OTHER END OF SAID TANK; MEANS IN ONE OF THE CHANNEL MEANS FOR CIRCULATING THE SOLUTION IN A DIRECTION FROM THE UPPER END OF THE TANK THROUGH SAID FIRST, BYPASS AND SECOND CHANNEL MEANS INTO THE LOWER END OF SAID TANK AT A SPEED OF BETWEEN 0.5 CM. PER SECOND; AND FILTER MEANS IN SAID FIRST CHANNEL MEANS FOR COLLECTING SOLIDS ENTRAINED BY THE CIRCULATING SOLUTION, THE FILTER MEANS HAVING AN UPPER END ALIGNED WITH THE UPPER LEVEL OF SOLUTION IN SAID TANK WHEREBY THE SOLUTION OVERFLOWS THE FILTER MEANS WHEN THE LATTER IS CLOGGED BY THE SOLIDS, AND THE MESH SIZE OF SAID FILTER MEANS BEING IN THE RANGE OF BETWEEN 0.2-5 MM.
Claim 2
Independent Claim
208 words
AN APPARATUS FOR REMOVING SOLID PARTICLES FORM DEVELOPING SOLUTIONS FOR EXPOSED FILMS AND THE LIKE WHICH COMPRISES, IN COMBINATION: A TANK HAVING AN UPPER END AND A LOWER END; A SUPPLY OF DEVELOPING SOLUTION IN THE TANK HAVING AN UPPER LEVEL; FIRST AND SECOND CONNECTING CHANNEL MEANS COMMUNICATING, RESPECTIVELY, WITH THE UPPER AND LOWER END OF SAID TANK; BYPASS CHANNEL MEANS COMMUNICATING WITH THE FIRST AND SECOND CHANNEL MEANS AND FORMING WITH THE LATTER A PASSAGE FOR THE FLOW OF SOLUTION FROM ONE END OF SAID TANK THROUGH THE CHANNEL MEANS AND INTO THE OTHER END OF SAID TANK; MEANS IN ONE OF THE CHANNEL MEANS FOR CIRCULATING THE SOLUTION IN A DIRECTION FROM THE UPPER END OF THE TANK THROUGH SAID FIRST, BYPASS AND SECOND CHANNEL MEANS INTO THE LOWER END OF SAID TANK AT A SPEED OF BETWEEN 0.5 CM. PER SECOND; AND FILTER MEANS IN SAID FIRST CHANNEL MEANS FOR COLLECTING SOLIDS ENTRAINED BY THE CIRCULATING SOLUTION, THE FILTER MEANS HAVING AN UPPER END ALIGNED WITH THE UPPER LEVEL OF SOLUTION IN SAID TANK WHEREBY THE SOLUTION OVERFLOWS THE FILTER MEANS WHEN THE LATTER IS CLOGGED BY THE SOLIDS, AND THE MESH SIZE OF SAID FILTER MEANS BEING IN THE RANGE OF BETWEEN 0.2-5 MM.
References Cited (Backward Citations)
US909484A
Cited
US1158034A
Cited
US1634463A
Cited
US1561602A
Cited
US1987847A
Cited
US2168846A
Cited
US2383086A
Cited
CH245703A
Cited
US2781914A
Cited
US2854141A
Cited
US2862432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |