US3255011A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-component diazotype photoprinting material susceptible to thermal development
Assignee: GAF Chemicals Corp
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Filing: 1963-07-01
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Granted: 1966-06-07
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Expires: 1983-07-01
Abstract
No abstract record available.
Inventors
- 👤 Walter J Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:07
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/61
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
TWO COMPONENT DIAZOTYPE PHOTPRINTING MATERIAL SUSEPTBLE TO DEVELOPMENT ON HEATING, HAVING ON A SURFACE OF A SUPPORTING SHEET, A LIGHT-SENSITIVE LAYER CONTAINING AN AZO COUPLING COMPONENT, A LIGHT-SENSITIVE DIAZONIUM COMPOUND, AN ACID STABILIZER AGAIINST PREMATURE COUPLING, A NEUTRAL TO ACID ORGANIC ACID SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL, AMMONIUM AND NITROGEN BASE SALTS YIELDING AN ALKALINE REACTING COMPOUND ON HEATING TO A TEMPERATURE BETWEEN 100 AND 200*C., AND AN AMID OF A LOWER ALIPHATIC MONOCARBOXY ACID SELECTED FROM THE GROUP CONSISTING OF FORMAMID, ACETAMID, PROPIONAMID AND BUTYRAMID AMOUNTING TO ABOUT 3 TO 30% BY WEIGHT OF THE COMPONENTS OF SAID LIGHT-SENSITIVE LAYER.
Claim 2
Dependent Claim
105 words
TWO COMPONENT DIAZOTYPE PHOTPRINTING MATERIAL SUSEPTBLE TO DEVELOPMENT ON HEATING, HAVING ON A SURFACE OF A SUPPORTING SHEET, A LIGHT-SENSITIVE LAYER CONTAINING AN AZO COUPLING COMPONENT, A LIGHT-SENSITIVE DIAZONIUM COMPOUND, AN ACID STABILIZER AGAIINST PREMATURE COUPLING, A NEUTRAL TO ACID ORGANIC ACID SALT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL, AMMONIUM AND NITROGEN BASE SALTS YIELDING AN ALKALINE REACTING COMPOUND ON HEATING TO A TEMPERATURE BETWEEN 100 AND 200*C., AND AN AMID OF A LOWER ALIPHATIC MONOCARBOXY ACID SELECTED FROM THE GROUP CONSISTING OF FORMAMID, ACETAMID, PROPIONAMID AND BUTYRAMID AMOUNTING TO ABOUT 3 TO 30% BY WEIGHT OF THE COMPONENTS OF SAID LIGHT-SENSITIVE LAYER.
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) | 1969-06-06 | 1969-12-06 | 1970-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-06 | 1973-12-06 | 1974-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-06 | 1977-12-06 | 1978-06-07 | $7700.00 | Window Closed / Lapsed |