US3326744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stain-free paper sized with starch or gelatin and aromatic organic acids
Assignee: Eastman Kodak Co
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Filing: 1963-03-01
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Granted: 1967-06-20
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Expires: 1983-03-01
Abstract
No abstract record available.
Inventors
- 👤 Donald G Yungkurth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:45
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/775; G03C8/00; G03C8/42; G03C8/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A STAIN-RESISTANT PAPER FOR USE IN PHOTOGRAPHY COMPRISING SURFACE OF SAID PAPER SIZED WITH A BINDER SELECTED FROM THE GROUP CONSISTING OF STARCH OR GELATIN AND .5.75%, BASED ON THE DRY WEIGHT OF PAPER, OF A COMBINATION OF TWO AROMATIC ORGANIC ACIDS SOLUBLE AT CONCENTRATIONS OF 1-6% IN WATER AT 100-120* F., ONE OF SAID ACIDS BEING SELECTED FROM (A) THE GROUP CONSISTING OF PHTHALIC AND P-HYDROXYBENZOIC ACIDS, AND THE OTHER ACID BEING SELECTED FROM (B) THE GROUP CONSISTING OF SALICYLIC ACID AND BENZOIC ACID, THE RATION OF (A) TO (B) BEING FROM 7:1 TO 3:1.
Claim 2
Dependent Claim
96 words
A STAIN-RESISTANT PAPER FOR USE IN PHOTOGRAPHY COMPRISING SURFACE OF SAID PAPER SIZED WITH A BINDER SELECTED FROM THE GROUP CONSISTING OF STARCH OR GELATIN AND .5.75%, BASED ON THE DRY WEIGHT OF PAPER, OF A COMBINATION OF TWO AROMATIC ORGANIC ACIDS SOLUBLE AT CONCENTRATIONS OF 1-6% IN WATER AT 100-120* F., ONE OF SAID ACIDS BEING SELECTED FROM (A) THE GROUP CONSISTING OF PHTHALIC AND P-HYDROXYBENZOIC ACIDS, AND THE OTHER ACID BEING SELECTED FROM (B) THE GROUP CONSISTING OF SALICYLIC ACID AND BENZOIC ACID, THE RATION OF (A) TO (B) BEING FROM 7:1 TO 3:1.
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) | 1970-06-19 | 1970-12-19 | 1971-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-19 | 1974-12-19 | 1975-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-19 | 1978-12-19 | 1979-06-20 | $7700.00 | Window Closed / Lapsed |