Patent US3002152A successfully refreshed from Google Patents.
Patent US2801191A successfully refreshed from Google Patents.
US2801191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable layers for film
Assignee: Eastman Kodak Co
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Filing: 1955-11-08
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Granted: 1957-07-30
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Expires: 1975-11-08
Abstract
No abstract record available.
Inventors
- 👤 Gale F Nadeau
- 👤 Crayton B Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:01
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/825; G03C1/835
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
THE METHOD OF MANUFACTURING FILM PRODUCT WHICH POSSESSES ANTIHALATION AND ANTISTATIC PROPERTIES, WHICH COMPRISES OBTAINING A FILM BASE A COMPOSITON MADE LEAST ONE SURFACE OF SAID FILM BASE A COMPOSITION MADE UP OF AMINOACYL DERIVATIVE OF CELLULOSE FROM THE GROUP CONSISTING OF CELLULOSE ACETATE N,N-DIETHYLAMINO ACEATE, CELLULOSE ACETATE N,N-DIETHYLAMINO ACETATE, CELLULOSE ACETATE N,N-DIPROYLAMINO, CELLULOSE ACETATE MORPHOLINO ACETATE, AND ETHYL CELULOSE N,N-DIETHYLAMINO ETHYLAMINO ACETATE, AND ETHYL CELLULOSE N,N-DIETHYLAMINO ACETATE, AND ANTIHALATION DYE, AN ANTISTATIC MATERIAL AND SOLVENT WHICH WILL SUBSTANTIALLY DISSOLVE THE AFOREMENTIONED INGREDIENTS AND ATTACK THE FILM BASE TO A LIMITED EXTENT, AND EVAPORATING OFF SAID SOLVEN TO LEAVE A COATING OF THE FIRST-MENTIONED INGREDIENTS.
References Cited (Backward Citations)
US2072870A
Cited
GB713386A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |