Patent US2941898A successfully refreshed from Google Patents.
US2941898A
Expired / Lapsed
US
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Production of multilayer photographic materials
Assignee: Ilford Imaging UK Ltd
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Filing: 1958-11-24
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Granted: 1960-06-21
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Expires: 1978-11-24
Abstract
No abstract record available.
Inventors
- 👤 Wynn Norman Ratcliffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/74; B; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/25; B29C48/88; B29C48/911; B29C48/9135; B29C48/914; Y; Y10; Y10S; Y10S430/00; Y10S430/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS FOR COATING A PLURALITY OF LAYERS ON A WEB SUPPORT IN THE PRODUCTION OF A PHOTOGRAPHIC MATERIAL WHICH COMPRISES APPLYING A PLURALITY OF COATING LIQUIDS TO THE TRAVELLING SUPPORT FROM STATIONS SPACED AT SHORT DISTANCES APART, WHEREBY THE WEB SUPPORT PICKS UP COATING LIQUID FROM EACH OF SAID STATIONS IN SUCCESSION, THE COATING SOLUTIONS AFTER THE FIRST THUS BEING APPLIED TO A LIQUID LAYER DERIVED FROM THE NEXT PRECEDING COATING STATION, EACH OF THE SAID LIQUIDS AFTER THAT FIRST APPLIED BEING METERED TO THE SUPPORT THROUGH A SLOT EXTENDING ACROSS THE WEB AND CONSTITUTING AT ITS COATING STATION A BEAD OF COATING LIQUID CONNECTING THE SAID SLOT AND THE SURFACE BEING COATED.
Claim 2
Dependent Claim
114 words
A PROCESS FOR COATING A PLURALITY OF LAYERS ON A WEB SUPPORT IN THE PRODUCTION OF A PHOTOGRAPHIC MATERIAL WHICH COMPRISES APPLYING A PLURALITY OF COATING LIQUIDS TO THE TRAVELLING SUPPORT FROM STATIONS SPACED AT SHORT DISTANCES APART, WHEREBY THE WEB SUPPORT PICKS UP COATING LIQUID FROM EACH OF SAID STATIONS IN SUCCESSION, THE COATING SOLUTIONS AFTER THE FIRST THUS BEING APPLIED TO A LIQUID LAYER DERIVED FROM THE NEXT PRECEDING COATING STATION, EACH OF THE SAID LIQUIDS AFTER THAT FIRST APPLIED BEING METERED TO THE SUPPORT THROUGH A SLOT EXTENDING ACROSS THE WEB AND CONSTITUTING AT ITS COATING STATION A BEAD OF COATING LIQUID CONNECTING THE SAID SLOT AND THE SURFACE BEING COATED.
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) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |