Patent US2734825A successfully refreshed from Google Patents.
US2734825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
morgan
Assignee: —
•
Filing: —
•
Granted: 1956-02-14
•
Expires: 1973-02-14
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:16
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/95; G03C1/005; G03C1/04; G03C1/053; G03C1/795; G03C1/91; G03C1/93; Y; Y10; Y10S; Y10S430/00; Y10S430/162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A HEAT-MOLDABLE PHOTOGRAPHIC FILM COMPRISING A FLEXIBLE BASE SHEET COMPOSED OF A POLY(VINYL CHLORIDE CO VINYL ACETATE), PREDOMINATING IN VINYL CHLORIDE, AND A WHITE PIGMENT AS AN OPACIFYING AGENT, BEARING IN ORDER ON ONE SURFACE A SUBLAYER COMPOSED OF A MIXTURE OF A POLY(VINYL CHLORIDE CO VINYL ACETATE CO VINYL ALCOHOL) AND NITROCELLULOSE. A LAYER COMPOSED OF A HYDROPHILIC MACROMOLECULAR MIXED BENZALDEHYDE/SODIUM O-SULFOBENZALDEHYDE POLYVINYL ACETAL, AND A LIGHT-SENSITIVE LAYER COMPRISING SILVER HALIDE GRAINS DISPERSED IN A HYDROPHILIC, MACROMOLECULAR MIXED BENZALDEHYDE/O-SULFOBENZALDEHYDE POLYVINYL ACETAL.
Claim 2
Dependent Claim
82 words
A HEAT-MOLDABLE PHOTOGRAPHIC FILM COMPRISING A FLEXIBLE BASE SHEET COMPOSED OF A POLY(VINYL CHLORIDE CO VINYL ACETATE), PREDOMINATING IN VINYL CHLORIDE, AND A WHITE PIGMENT AS AN OPACIFYING AGENT, BEARING IN ORDER ON ONE SURFACE A SUBLAYER COMPOSED OF A MIXTURE OF A POLY(VINYL CHLORIDE CO VINYL ACETATE CO VINYL ALCOHOL) AND NITROCELLULOSE. A LAYER COMPOSED OF A HYDROPHILIC MACROMOLECULAR MIXED BENZALDEHYDE/SODIUM O-SULFOBENZALDEHYDE POLYVINYL ACETAL, AND A LIGHT-SENSITIVE LAYER COMPRISING SILVER HALIDE GRAINS DISPERSED IN A HYDROPHILIC, MACROMOLECULAR MIXED BENZALDEHYDE/O-SULFOBENZALDEHYDE POLYVINYL ACETAL.
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) | 1959-02-13 | 1959-08-15 | 1960-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-13 | 1963-08-15 | 1964-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-13 | 1967-08-15 | 1968-02-14 | $7700.00 | Window Closed / Lapsed |