US3756828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Es photographic light sensitive material having good antistatic properti
Assignee: Fujifilm Holdings Corp
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Filing: 1972-03-08
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Granted: 1973-09-04
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Expires: 1992-03-08
Abstract
Abstract A SILVER HALIDE PHOTOGRAPHIC LIGHT-SENSITVE MATERIAL ENDOWED WITH GOOD ANTISTATIC PROPERTY BY INCORPORATING IN THE PHOTOGRAPHIC EMULSION LAYER OR APPLYING TO THE SURFACE OF THE SUPPORT FOR THE PHOTOGRAPHIC LIGHT-SENSITIVE MATERIAL A POLYHYDRIC ALCOHOL ESTER DERIVATIVE OF AN ALPHA-SULFOFATTY ACID HAVING THE GENERAL FORMULA (R-CH(-SO3-M)-COO)N-Y WHEREIN R IS A SATURATED OR UNSATURATED STRAIGHT OR BRANCH CHAIN ALIPHATIC GROUP HAVING MORE THAN 6 CARBON ATOMS; M IS A HYDROGEN ATOM, AN ALKALI METAL ATOM, OR A QUATERNARY AMMONIUM GROUP; Y IS A RESIDUAL GROUP HAVING AT LEAST ONE HYDROXYL GROUP AND FROM 2 TO 18 CARBON ATOMS; AND N IS AN INTEGER OF FROM 1 TO 7.
Inventors
- 👤 M Yoneyama
- 👤 N Yamamoto
- 👤 K Endo
- 👤 Machi M Ashigara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:04
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/38; G03C1/76; G03C1/85
Claims Analysis
Total Claims: 0
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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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |