Patent US3128185A successfully refreshed from Google Patents.
US3128185A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifoggants for formaldehydehardened photographic layers
Assignee: Eastman Kodak Co
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Filing: 1960-01-25
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Granted: 1964-04-07
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Expires: 1980-01-25
Abstract
No abstract record available.
Inventors
- 👤 Charles A Goffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:28
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION HARDENED SUBSTANTIALLY ONLY WITH FORMALDEHYDE, SENSITIZED WITH A LABILE SULFUR COMPOUND AND A GOLD SALT, AND STABILIZED WITH AN ALDEHYDE COMPOUND SELECTED FROM THE CLASS CONSISTING OF MUCOCHLORIC ACID, A WATER-SOLUBLE SALT OF MUCOCHLORIC ACID, MUCOBROMIC ACID, A WATER SOLUBLE SALT OF MUCOBROMIC ACID AND AN AROMATIC ALDEHYDE CONTAINING A SUBSTITUENT ONLY IN AT LEAST ONE OF THE POSITIONS: THE 3-POSITION WITH RESPECT TO THE ALDEHYDE GROUP AND THE 4-POSITION WITH RESPECT TO THE ALDEHYDE GROUP, SAID SUBSTITUENT BEING SELECTED FROM THE CLASS CONSISTING OF AN HYDROXYL GROUP, A HALOGEN ATOM, A LOWER ALKYL GROUP, AND AN ALKOXYL GROUP, SAID AROMATIC ALDEHYDE CONTAINING FROM 7 TO 10 CARBON ATOMS.
Claim 2
Dependent Claim
114 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION HARDENED SUBSTANTIALLY ONLY WITH FORMALDEHYDE, SENSITIZED WITH A LABILE SULFUR COMPOUND AND A GOLD SALT, AND STABILIZED WITH AN ALDEHYDE COMPOUND SELECTED FROM THE CLASS CONSISTING OF MUCOCHLORIC ACID, A WATER-SOLUBLE SALT OF MUCOCHLORIC ACID, MUCOBROMIC ACID, A WATER SOLUBLE SALT OF MUCOBROMIC ACID AND AN AROMATIC ALDEHYDE CONTAINING A SUBSTITUENT ONLY IN AT LEAST ONE OF THE POSITIONS: THE 3-POSITION WITH RESPECT TO THE ALDEHYDE GROUP AND THE 4-POSITION WITH RESPECT TO THE ALDEHYDE GROUP, SAID SUBSTITUENT BEING SELECTED FROM THE CLASS CONSISTING OF AN HYDROXYL GROUP, A HALOGEN ATOM, A LOWER ALKYL GROUP, AND AN ALKOXYL GROUP, SAID AROMATIC ALDEHYDE CONTAINING FROM 7 TO 10 CARBON ATOMS.
References Cited (Backward Citations)
FR826492A
Cited
US2165421A
Cited
US2226183A
Cited
US2399083A
Cited
US2624674A
Cited
US2591542A
Cited
US2860982A
Cited
US2870013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |