US2703283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive material and process of its preparation
Assignee: Individual
•
Filing: 1951-03-06
•
Granted: 1955-03-01
•
Expires: 1971-03-06
Abstract
No abstract record available.
Inventors
- 👤 Eggert John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:20
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/72; G03C1/725
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
THE METHOD OF PREPARING A DIRECT POSITIVE PRINT WHICH COMPRISES INCORPORATION NITROGEN IODIDE AS A DETONABLE ENDOTHERMIC SUBSTANCE IN A FINELY DIVIDED FROM INTO A HIGHLY ABSORBENT CARRIER MATERIAL WITH AN IMPREGNATING SAID ABSORBENT CARRIER MATERIAL WITH AN AQUEOUS IODINE-POTASSIUM IODIDE SOLUTION, TREATING THE MOIST PAPER SUBSEQUENTLY WITH AN AQUEOUS AMMONIA SOLUTION, THEREBY FORMING FINELY DIVIDED NITROGEN IODIDE IN THE CARRIER, EXPOSING THE MATERIAL THUS OBTAINED AFTER DRYING THROUGH A TRANSPARENCY WITH VISIBLE LIGHT OF SHORT DURATION AND HIGH INTENSITY PRODUCTED BY A PHOTOGRAPHIC SPEEDLIGHT, THERBY DETONATING PART OF THE NITROGEN IODIDE, THE EXTENT OF DETONATION BEING DIRECTLY PROPORTIONAL TO THE AMOUNT OF LIGHT TRANSMITTED BY THE VARIOUS AREAS OF SAID TRANSPARENCY.
Claim 2
Independent Claim
112 words
THE METHOD OF PREPARING A DIRECT POSITIVE PRINT WHICH COMPRISES INCORPORATION NITROGEN IODIDE AS A DETONABLE ENDOTHERMIC SUBSTANCE IN A FINELY DIVIDED FROM INTO A HIGHLY ABSORBENT CARRIER MATERIAL WITH AN IMPREGNATING SAID ABSORBENT CARRIER MATERIAL WITH AN AQUEOUS IODINE-POTASSIUM IODIDE SOLUTION, TREATING THE MOIST PAPER SUBSEQUENTLY WITH AN AQUEOUS AMMONIA SOLUTION, THEREBY FORMING FINELY DIVIDED NITROGEN IODIDE IN THE CARRIER, EXPOSING THE MATERIAL THUS OBTAINED AFTER DRYING THROUGH A TRANSPARENCY WITH VISIBLE LIGHT OF SHORT DURATION AND HIGH INTENSITY PRODUCTED BY A PHOTOGRAPHIC SPEEDLIGHT, THERBY DETONATING PART OF THE NITROGEN IODIDE, THE EXTENT OF DETONATION BEING DIRECTLY PROPORTIONAL TO THE AMOUNT OF LIGHT TRANSMITTED BY THE VARIOUS AREAS OF SAID TRANSPARENCY.
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) | 1958-02-28 | 1958-08-30 | 1959-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-28 | 1962-08-30 | 1963-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-28 | 1966-08-30 | 1967-03-01 | $7700.00 | Window Closed / Lapsed |