US3057723A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hardening of gelatin with oxystarch
Assignee: Eastman Kodak Co
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Filing: 1959-06-24
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Granted: 1962-10-09
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Expires: 1979-06-24
Abstract
No abstract record available.
Inventors
- 👤 Roy A Jeffreys
- 👤 Bryan E Tabor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:03
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/303; C; C08; C08B; C08B31/00; C08B31/18; C09; C09H; C09H7/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
20 words
A COMPOSITION OF MATTER COMPRISING GELATIN AND A HARDENING AMOUNT OF THE PRODUCT RESULTING FROM THE PERIODATE OXIDATION OF STARCH.
Claim 2
Dependent Claim
20 words
A COMPOSITION OF MATTER COMPRISING GELATIN AND A HARDENING AMOUNT OF THE PRODUCT RESULTING FROM THE PERIODATE OXIDATION OF STARCH.
Claim 3
Dependent Claim
42 words
A COMPOSITION OF MATTER COMPRISING AN AQUEOUS SOLUTION OF GELATIN CONTAINING AS THE HARDENER THEREIN OXYSTARCH PREPARED BY THE PERIODATE OXIDATION OF STARCH AND IN ADDITION, A DYE DEVELOPER COMPOUND, SAID COMPOUND BEING BOTH A DYE AND A SLIVER HALIDE DEVELOPING AGENT.
Claim 4
Dependent Claim
42 words
A COMPOSITION OF MATTER COMPRISING AN AQUEOUS SOLUTION OF GELATIN CONTAINING AS THE HARDENER THEREIN OXYSTARCH PREPARED BY THE PERIODATE OXIDATION OF STARCH AND IN ADDITION, A DYE DEVELOPER COMPOUND, SAID COMPOUND BEING BOTH A DYE AND A SLIVER HALIDE DEVELOPING AGENT.
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) | 1965-10-08 | 1966-04-09 | 1966-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-08 | 1970-04-09 | 1970-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-08 | 1974-04-09 | 1974-10-09 | $7700.00 | Window Closed / Lapsed |