Patent US2533181A successfully refreshed from Google Patents.
US2533181A
Expired / Lapsed
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Preparation of colored metallo-alpha-oximino ketone complex images
Assignee: GAF Chemicals Corp
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Filing: 1949-07-08
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Granted: 1950-12-05
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Expires: 1969-07-08
Abstract
No abstract record available.
Inventors
- 👤 Donald E Sargent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:28
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/40
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
126 words
THE PROCESS OF PRODUCING A-OXIMINO-KETONE COMPLEX IMAGES IN A PHOTOGRAPHIC ELEMENT WHICH COMPRISES TREATING A SILVER HALIDE IMAGE IN SUCH ELEMENT WITH AN AQUEOUS ALKALINE SOLUTION OF A COMPOUND CAPABLE OF FORMING SILVER SLATS LESS SOLUBLE THAN SILVER HALIDES AND CONTAINING A THIO AMIDE GROUPING CAPABLE OF ISOMERIZING TO AN ISOTHIOAMIDE GROUPING AND A STRUCTURE YIELDING A-OXIMINO-KETONE COMPOUNDS UPON NITROSATION AND SELECTED FROM THE CLASS CONSISTING OF A-KETOMETHYLENE AND 1- AND 2-HYDROXY NAPHTHALENE STRUCTURES, NITROSATING THE RESULTING SILVER SALT WITH AQUEOUS NITRIC ACID AND TREATING SUCH SILVER SALT WITH A SOLUBLE METAL SALT SELECTED FROM THE CLASS CONSISTING OF SOLUBLE FERROUS AND COBALTOUS SALTS TO CONVERT THE NITROSATED SILVER SALT IMAGE INTO AN INTENSELY COLORED METALLO-A-OXIMINOKETONE COMPLEX IMAGE IN SITU WITH THE ORIGINAL SILVER HALIDE IMAGE.
Claim 2
Dependent Claim
126 words
THE PROCESS OF PRODUCING A-OXIMINO-KETONE COMPLEX IMAGES IN A PHOTOGRAPHIC ELEMENT WHICH COMPRISES TREATING A SILVER HALIDE IMAGE IN SUCH ELEMENT WITH AN AQUEOUS ALKALINE SOLUTION OF A COMPOUND CAPABLE OF FORMING SILVER SLATS LESS SOLUBLE THAN SILVER HALIDES AND CONTAINING A THIO AMIDE GROUPING CAPABLE OF ISOMERIZING TO AN ISOTHIOAMIDE GROUPING AND A STRUCTURE YIELDING A-OXIMINO-KETONE COMPOUNDS UPON NITROSATION AND SELECTED FROM THE CLASS CONSISTING OF A-KETOMETHYLENE AND 1- AND 2-HYDROXY NAPHTHALENE STRUCTURES, NITROSATING THE RESULTING SILVER SALT WITH AQUEOUS NITRIC ACID AND TREATING SUCH SILVER SALT WITH A SOLUBLE METAL SALT SELECTED FROM THE CLASS CONSISTING OF SOLUBLE FERROUS AND COBALTOUS SALTS TO CONVERT THE NITROSATED SILVER SALT IMAGE INTO AN INTENSELY COLORED METALLO-A-OXIMINOKETONE COMPLEX IMAGE IN SITU WITH THE ORIGINAL SILVER HALIDE IMAGE.
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) | 1953-12-04 | 1954-06-05 | 1954-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-04 | 1958-06-05 | 1958-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-04 | 1962-06-05 | 1962-12-05 | $7700.00 | Window Closed / Lapsed |