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US3077400A
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Color diffusion transfer using gelatinsilver halide emulsions containing cellulose ethers
Assignee: Polaroid Corp
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Filing: 1962-04-26
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Granted: 1963-02-12
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Expires: 1982-04-26
Abstract
No abstract record available.
Inventors
- 👤 Howard G Rogers
- 👤 Harriet W Lutes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:27
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2127621A
Cited
US2127573A
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GB517480A
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US2357590A
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US2756142A
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US2774668A
Cited
GB804971A
Cited
US2892710A
Cited
US3003878A
Cited
US2983606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |