US3178293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation-sensitive elements and their preparation
Assignee: EIDP Inc
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Filing: 1962-10-25
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Granted: 1965-04-13
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Expires: 1982-10-25
Abstract
No abstract record available.
Inventors
- 👤 Bigelow John Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:42
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/49
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
A PROCESS OF MAKING LIGHT-DEVELOPABLE, DIRECT-WRITING SILVER HALIDE EMULSIONS WHICH COMPRISES (1) ADMIXING AQUEOUS SILVER NITRATE AND FROM 0.33 TO 10 MOLE PERCENT, BASED ON THE SILVER, OF A WATERSOLUBLE PLUMBOUS SALT (0.0033 TO 0.1 MOLE OF PLUMBOUS SALT PER MOLE OF SILVER), WITH AN ACIDIFIED AQUEOUS SOLUTION OF A WATER-SOLUBLE HALIDE CONTAINING A WATER-PERMEABLE ORGANIC COLLOID BINDING AGENT; (2) RIPENILNG THE PRECIPITATED SILVER HALIDE EMULSION, (3) DIGESTING THE RESULTING EMULSION, AND PRIOR TO COMPLETION OF ONE OF THE STEPS OF DIGESTING AND COATING, INCORPORATING WITH THE SILVER HALIDE EMULSION, BASED ON THE SILVER, (A) 0 TO 120 MOLE PERCENT OF A WATER-SOLUBLE INORGANIC BROMIDE, (B) A WATER-SOLUBLE LPLUMBOUS SALT IN AN AMOUNT OF 0 T 5 MOLE PERCENT, AND ONE OF THE FOLLOWING: (C) 5 TO 50 MOLE PERCENT OF A WATER-SOLUBLE STANNOUS SALT, AND (D) 30 TO 350 MOLE PERCENT OF SODIUM NITRITE.
Claim 2
Dependent Claim
145 words
A PROCESS OF MAKING LIGHT-DEVELOPABLE, DIRECT-WRITING SILVER HALIDE EMULSIONS WHICH COMPRISES (1) ADMIXING AQUEOUS SILVER NITRATE AND FROM 0.33 TO 10 MOLE PERCENT, BASED ON THE SILVER, OF A WATERSOLUBLE PLUMBOUS SALT (0.0033 TO 0.1 MOLE OF PLUMBOUS SALT PER MOLE OF SILVER), WITH AN ACIDIFIED AQUEOUS SOLUTION OF A WATER-SOLUBLE HALIDE CONTAINING A WATER-PERMEABLE ORGANIC COLLOID BINDING AGENT; (2) RIPENILNG THE PRECIPITATED SILVER HALIDE EMULSION, (3) DIGESTING THE RESULTING EMULSION, AND PRIOR TO COMPLETION OF ONE OF THE STEPS OF DIGESTING AND COATING, INCORPORATING WITH THE SILVER HALIDE EMULSION, BASED ON THE SILVER, (A) 0 TO 120 MOLE PERCENT OF A WATER-SOLUBLE INORGANIC BROMIDE, (B) A WATER-SOLUBLE LPLUMBOUS SALT IN AN AMOUNT OF 0 T 5 MOLE PERCENT, AND ONE OF THE FOLLOWING: (C) 5 TO 50 MOLE PERCENT OF A WATER-SOLUBLE STANNOUS SALT, AND (D) 30 TO 350 MOLE PERCENT OF SODIUM NITRITE.
References Cited (Backward Citations)
US3033682A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |