US2470769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Color photographic material and processes for producing same
Assignee: Chromogen Inc
•
Filing: 1944-05-29
•
Granted: 1949-05-24
•
Expires: 1964-05-29
Abstract
No abstract record available.
Inventors
- 👤 Gaspar Bela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:53
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/28; G03C7/29; Y; Y10; Y10S; Y10S534/00; Y10S534/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB219653A
Cited
US2071688A
Cited
FR822348A
Cited
GB496559A
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CH204534A
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US2178167A
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GB541073A
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US2286837A
Cited
US2294892A
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US2294893A
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GB549176A
Cited
GB551501A
Cited
US2286714A
Cited
GB551500A
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US2346531A
Cited
US2342620A
Cited
US2981149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-23 | 1952-11-22 | 1953-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-23 | 1956-11-22 | 1957-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-23 | 1960-11-22 | 1961-05-24 | $7700.00 | Window Closed / Lapsed |