US2534326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing photographic elements
Assignee: EIDP Inc
•
Filing: 1946-11-27
•
Granted: 1950-12-19
•
Expires: 1966-11-27
Abstract
No abstract record available.
Inventors
- 👤 Weaver Clay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:02
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS OF MANUFACTURING PHOTOGRAPHIC ELEMENTS WHICH COMPRISES COATING A SUPPORT WITH A SOLUTION OF SYNTHETIC HYDROXYL POLYMER CONTAINING A SUBSTANTIAL AMOUNT OF A SOLUBLE BORON COMPOUND CAPABLE OF YIELDING BORATE IONS, SAID SOLUTION HAVING A PH LESS THAN 7.0, DRYING THE LAYER AND COATING THE RESULTING LAYER WITH A FLUID SILVER HALIDE EMULSION IN A SYNTHETIC HYDROXYL POLYMER HAVING A PH GREATER THAN 7.0 EACH SAID HYDROXYL POLYMER BEING WATER-SOLUBLE TO HYDROPHILLIC IN CHARACTER AND CONTAINING A LARGE NUMBER OF RECURRING INTRALINEAR
Claim 2
Dependent Claim
83 words
A PROCESS OF MANUFACTURING PHOTOGRAPHIC ELEMENTS WHICH COMPRISES COATING A SUPPORT WITH A SOLUTION OF SYNTHETIC HYDROXYL POLYMER CONTAINING A SUBSTANTIAL AMOUNT OF A SOLUBLE BORON COMPOUND CAPABLE OF YIELDING BORATE IONS, SAID SOLUTION HAVING A PH LESS THAN 7.0, DRYING THE LAYER AND COATING THE RESULTING LAYER WITH A FLUID SILVER HALIDE EMULSION IN A SYNTHETIC HYDROXYL POLYMER HAVING A PH GREATER THAN 7.0 EACH SAID HYDROXYL POLYMER BEING WATER-SOLUBLE TO HYDROPHILLIC IN CHARACTER AND CONTAINING A LARGE NUMBER OF RECURRING INTRALINEAR
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) | 1953-12-18 | 1954-06-19 | 1954-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-18 | 1958-06-19 | 1958-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-18 | 1962-06-19 | 1962-12-19 | $7700.00 | Window Closed / Lapsed |