US3832218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-intercepting paper for photographic film
Assignee: Fujifilm Holdings Corp
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Filing: 1972-07-25
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Granted: 1974-08-27
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Expires: 1992-07-25
Abstract
Abstract A LIGHT-INTERCEPTING PAPER FOR A PHOTOGRAPHIC FILM COMPRISING A PAPER HAVING ON AT LEAST ONE SIDE OF SAID PAPER A LIGHT-INTERCEPTING LAYER COMPRISING CARBON BLACK DISPERSED IN A COPOLYMER OF ETHYLENE AND AT LEAST ONE ESTER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ESTERS, METHACRYLIC ESTERS AND MIXTURES THEREOF, WHEREIN THE ALKYL MOIETY OF SAID ESTER HAS FROM 1 TO 8 CARBON ATOMS, AND WHEREIN SAID COPOLYMER HAS A COPOLYMERIZATION MOLAR RATIO OF SAID ESTERS TO ETHYLENE OF FROM 5:95 TO 40:60 IS DISCLOSED.
Inventors
- 👤 Y Seto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:24
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/10; G; G03; G03C; G03C3/00; G03C3/02; B32B27/30; B32B27/308; B32B27/32; B32B29/00; B32B29/002; B32B7/00; B32B7/04; B32B7/12; B32B2307/00; B32B2307/40; B32B2307/41; B32B2317/00; B32B2317/12; B32B2323/00; B32B2323/04; B32B2333/00; B32B2333/04; B32B2333/08; B32B2333/12; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/3179
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |