Patent US2717832A successfully refreshed from Google Patents.
US2717832A
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Diazotype materials for black line images containing diresorcyl sulfide or sulfoxide as a subsitiute for resorcinol
Assignee: GAF Chemicals Corp
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Filing: 1954-09-08
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Granted: 1955-09-13
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Expires: 1974-09-08
Abstract
No abstract record available.
Inventors
- 👤 Jr John Sulich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:44
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
A STORAGE STABLE LIGHT SENSITIVE DIAZOTYPE MATERIAL CAPABLE OF PRODUCING BLACK AZO DYE IMAGES UPON PRINTING AND DEVELOPMENT COMPRISING A FIBROUS BASE COATED WITH A LIGHT SENSITIVE DIAZONIUM COMPOUND OF THE PPHYLENEDIAMINE CLASS AND A MIXTURE OF COUPLING COMPONENTS COMPRISING ACETOCETANILIDE, 2,3-DIHYDROXY NAPHTHALENE-6-SULFONIC ACID AND A DIRESORCYL DERIVATIVE SELECTED FROM THE CLASS OF DIRESORCYL SULFIDE AND DIRESORCYL SULFOXIDE.
Claim 2
Dependent Claim
58 words
A STORAGE STABLE LIGHT SENSITIVE DIAZOTYPE MATERIAL CAPABLE OF PRODUCING BLACK AZO DYE IMAGES UPON PRINTING AND DEVELOPMENT COMPRISING A FIBROUS BASE COATED WITH A LIGHT SENSITIVE DIAZONIUM COMPOUND OF THE PPHYLENEDIAMINE CLASS AND A MIXTURE OF COUPLING COMPONENTS COMPRISING ACETOCETANILIDE, 2,3-DIHYDROXY NAPHTHALENE-6-SULFONIC ACID AND A DIRESORCYL DERIVATIVE SELECTED FROM THE CLASS OF DIRESORCYL SULFIDE AND DIRESORCYL SULFOXIDE.
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) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |