Patent US2541479A successfully refreshed from Google Patents.
US2541479A
Expired / Lapsed
US
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Method and apparatus for coating photographic film
Assignee: Eastman Kodak Co
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Filing: 1945-10-06
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Granted: 1951-02-13
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Expires: 1965-10-06
Abstract
No abstract record available.
Inventors
- 👤 Gale F Nadeau
- 👤 Fred W Hoyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:19
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/74; G03B; G03B17/00; G03B17/26; Y; Y10; Y10S; Y10S430/00; Y10S430/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD OF PREVENTING "FLOW LINES" IN COATING PHOTOGRAPHIC MATERIALS WITH A SOLUTION COMPRISING SUPPLYING COATING LIQUID TO A COATING PAN WHICH CONSISTS IN INTRODUCING INNUMERABLE CONSTANT SIZED MINUTE STREAMS OF COATING LIQUID OVER A RELATIVELY LARGE AREA OF THE COATING PAN AND MERGING THE INNUMERABLE MINUTE STREAMS TOGETHER WHEREBY THE LATERAL DIFFUSION OF THE STREAMS BLENDS THE INCOMING STREAM UNIFORMLY AND REDUCES AGITATION TO A MINIMUM TO PREVENT FLOW LINES FROM OCCURRING WHEN COATING STRIP MATERIAL FROM SAID COATING PAN.
Claim 2
Independent Claim
81 words
A METHOD OF PREVENTING "FLOW LINES" IN COATING PHOTOGRAPHIC MATERIALS WITH A SOLUTION COMPRISING SUPPLYING COATING LIQUID TO A COATING PAN WHICH CONSISTS IN INTRODUCING INNUMERABLE CONSTANT SIZED MINUTE STREAMS OF COATING LIQUID OVER A RELATIVELY LARGE AREA OF THE COATING PAN AND MERGING THE INNUMERABLE MINUTE STREAMS TOGETHER WHEREBY THE LATERAL DIFFUSION OF THE STREAMS BLENDS THE INCOMING STREAM UNIFORMLY AND REDUCES AGITATION TO A MINIMUM TO PREVENT FLOW LINES FROM OCCURRING WHEN COATING STRIP MATERIAL FROM SAID COATING PAN.
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) | 1954-02-12 | 1954-08-14 | 1955-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-12 | 1958-08-14 | 1959-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-12 | 1962-08-14 | 1963-02-13 | $7700.00 | Window Closed / Lapsed |