US2931295A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of molecularly oriented sheets of transparent, linear, high molecular weight, hydroxyl-containing polymers to improve the dyeing qualities thereof
Assignee: Polaroid Corp
•
Filing: 1954-05-21
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Granted: 1960-04-05
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Expires: 1974-05-21
Abstract
No abstract record available.
Inventors
- 👤 William H Ryan
- 👤 Vivian K Walworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:10
CPC Classifications
G; G03; G03C; G03C9/00; G03C9/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A METHOD OF DYEING A SHEET OF A TRANSPARENT, ORIENTABLE, HIGH MOLECULAR WEIGHT, HYDROXYL-CONTAINING, VINYL POLYMER WHICH HAS THE MOLECULES THEREOF ORIENTED IN A PREDETERMINED DIRECTION, THE STEPS COMPRISING FIRST IMBIBING INTO SAID SHEET THROUGHOUT AT LEAST A SURFACE THEREOF AN AQUEOUS PRETREATING SOLUTION CONTAINING IODIDE IONS AND IONS OF A BIVALENT METAL SELECTED FROM THE CLASS CONSISTING OF BERYLLIUM, MAGNESIUM AND CADMIUM SO THAT A UNIFORM DISTRIBUTION OF SAID IONS EXISTS AND SAID SHEET IS CAUSED TO BE PREDETERMINEDLY SWELLED FOR IMPROVED RECEPTION OF A DICHROIC DIRECT COTTON DYE, AND THEN IMBIBING INTO AT LEAST ONE SURFACE OF SAID SHEET AN AQUEOUS SOLUTION OF SAID DYE OF A PREDETERMINDED COLOR TO PREDETERMINEDLY DYE SAID SHEET.
Claim 2
Dependent Claim
117 words
IN A METHOD OF DYEING A SHEET OF A TRANSPARENT, ORIENTABLE, HIGH MOLECULAR WEIGHT, HYDROXYL-CONTAINING, VINYL POLYMER WHICH HAS THE MOLECULES THEREOF ORIENTED IN A PREDETERMINED DIRECTION, THE STEPS COMPRISING FIRST IMBIBING INTO SAID SHEET THROUGHOUT AT LEAST A SURFACE THEREOF AN AQUEOUS PRETREATING SOLUTION CONTAINING IODIDE IONS AND IONS OF A BIVALENT METAL SELECTED FROM THE CLASS CONSISTING OF BERYLLIUM, MAGNESIUM AND CADMIUM SO THAT A UNIFORM DISTRIBUTION OF SAID IONS EXISTS AND SAID SHEET IS CAUSED TO BE PREDETERMINEDLY SWELLED FOR IMPROVED RECEPTION OF A DICHROIC DIRECT COTTON DYE, AND THEN IMBIBING INTO AT LEAST ONE SURFACE OF SAID SHEET AN AQUEOUS SOLUTION OF SAID DYE OF A PREDETERMINDED COLOR TO PREDETERMINEDLY DYE SAID SHEET.
References Cited (Backward Citations)
US2070222A
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US2328219A
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US2373035A
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US2315373A
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US2387914A
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US2635535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |