US2835609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for coating cellulose ester films
Assignee: Eastman Kodak Co
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Filing: 1954-06-24
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Granted: 1958-05-20
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Expires: 1974-06-24
Abstract
No abstract record available.
Inventors
- 👤 Clemens B Starck
- 👤 Gale F Nadeau
- 👤 Carl F Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:27
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/91; G03C1/795; G03C1/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
THE METHOD OF MANUFACTURING A LAMINATED SHEET AT RELATIVELY HIGH MANUFACTURING SPEEDS, WHICH COMPRISES PROVIDING A SUPPORT OF A THICKNESS OF ABOUT .005" WHICH SUPPORT CONSISTS OF CELLULOSE ACETATE BUTYRATE CONTAINING TRIPHENYL PHOSPHATE, APPLYING TO THIS SUPPORT A COATING CONSISTING OF GELATIN 1.25-1.75%, CELLULOSE NITRATE .3-.5%, CHRONIC CHLORIDE (BASED ON THE WEIGHT OF GELATIN) 1.5%, CONTAINED IN A SOLVENT COMPRISED OF ACETONE 50-75%, AND METHYL ALCOHOL 25-45%, SETTING UP THIS COATING BY CONTACT OF THE COATED SHEET WITH A HEATED SURFACE AT A TEMPERATURE OF ABOUT 50*F., FURTHER CURING THIS COATED SHEET BY PASSAGE THROUGH AIR HEATED FROM 160*F.-240* F., APPLYING A SECOND COATING OVER THIS FIRST COATING, SAID SECOND COATING CONSISTING OF THE SOLIDS POLYVINYL ALCOHOL, SAPONIN AND ZIRCONIUM NITRATE IN AN AMOUNT BETWEEN .5 TO 1.5%, DEPOSITED FROM A LIQUID ENVIRONMENT CONSISTING OF ABOUT EQUAL PARTS OF METHYL ALCOHOL AND WATER, SUBJECTING THIS COATED SHEET TO CONTACT WITH A HEATED SURFACE AT A TEMPERATURE OF 105*F., AND WINDING UP THE FINISHED LAMINATED SHEET.
Claim 2
Independent Claim
165 words
THE METHOD OF MANUFACTURING A LAMINATED SHEET AT RELATIVELY HIGH MANUFACTURING SPEEDS, WHICH COMPRISES PROVIDING A SUPPORT OF A THICKNESS OF ABOUT .005" WHICH SUPPORT CONSISTS OF CELLULOSE ACETATE BUTYRATE CONTAINING TRIPHENYL PHOSPHATE, APPLYING TO THIS SUPPORT A COATING CONSISTING OF GELATIN 1.25-1.75%, CELLULOSE NITRATE .3-.5%, CHRONIC CHLORIDE (BASED ON THE WEIGHT OF GELATIN) 1.5%, CONTAINED IN A SOLVENT COMPRISED OF ACETONE 50-75%, AND METHYL ALCOHOL 25-45%, SETTING UP THIS COATING BY CONTACT OF THE COATED SHEET WITH A HEATED SURFACE AT A TEMPERATURE OF ABOUT 50*F., FURTHER CURING THIS COATED SHEET BY PASSAGE THROUGH AIR HEATED FROM 160*F.-240* F., APPLYING A SECOND COATING OVER THIS FIRST COATING, SAID SECOND COATING CONSISTING OF THE SOLIDS POLYVINYL ALCOHOL, SAPONIN AND ZIRCONIUM NITRATE IN AN AMOUNT BETWEEN .5 TO 1.5%, DEPOSITED FROM A LIQUID ENVIRONMENT CONSISTING OF ABOUT EQUAL PARTS OF METHYL ALCOHOL AND WATER, SUBJECTING THIS COATED SHEET TO CONTACT WITH A HEATED SURFACE AT A TEMPERATURE OF 105*F., AND WINDING UP THE FINISHED LAMINATED SHEET.
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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |