US3687707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating methods of hardenable multilayer arrangements
Assignee: Eastman Kodak Co
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Filing: 1970-04-29
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Granted: 1972-08-29
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Expires: 1990-04-29
Abstract
Abstract THIS INVENTION RELATES TO AN IMPROVED METHOD OF COATING UPON A SUPPORT SEVERAL SUPERIMPOSED DISTINCT LAYERS COMPRISING HARDENABLE ORGANIC HYDROPHILIC COLLOID AND A VINYLSULFONYL ALKYL HARDENER. THE IMPROVEMENT COMPRISES ADDING THE VINYLSULFONYL ALKYL HARDENER TO LESS THAN ALL THE LAYERS OF THE HARDENABLE ORGANIC HYDROPHILIC COLLOID TO UNIFORMLY HARDEN ALL THE HARDENABLE ORGANIC HYDROPHILIC COLLOID IN ALL THE LAYERS.
Inventors
- 👤 James Leo Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:39
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |