US2732299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light sensitive
Assignee: —
•
Filing: —
•
Granted: 1956-01-24
•
Expires: 1973-01-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/61; G03C1/615
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
THE PROCESS OF PRODUCING A LIGHT-SENSITIVE HEATDEVELOPABLE RECORDING ELEMENT, WHICH COMPRISES APPLYING TO A CARRIER A COATING INCLUDING A LIGHT-SENSITIVE DIAZO COMPOUND AND AN AZO COUPLING COMPOUND HAVING A PREDETERMINED VELOCITY OF REACTION WITH A SOLUTION OF AN AMMONIATE DEVELOPER-COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA AND THE LOWER ALKYL SUBSTITUTED UREAS AND SAID DEVELOPER-COMPOUND HAVING A SOLID STATE CRITICAL TEMPERATURE THERMAL DECOMPOSITION AMMONIATE REACTION WITH SAID COATING AT TEMPERATURE SUBSTANTIALLY ABOVE SOLUTION TEMPERATURES, APPLYING SAID SELECTED COMPOUND IN A SOLUTION STATE AT A TEMPERATURE SUBSTANTIALLY BELOW SAID SOLID STATE CRITICAL TEMPERATURE TO SAID COATING IN A SEPARATE STRATUM, AND SOLIDIFYING THE SOLUTE AND EVAPORATING THE SOLVENT FROM SAID SOLUTION STATE WITHIN A TIME LESS THAN REQUIRED BY SAID PREDETERMINED VELOCITY OF REACTION TO APPRECIABLY AMMONIATE SAID COATING IN THE ABSENCE OF A CHEMICAL REACTION-INHIBITOR FOR THE COUPLING REACTION OF SAID DIAZO COMPOUND AND AZO COUPLING COMPOUND.
Claim 2
Dependent Claim
148 words
THE PROCESS OF PRODUCING A LIGHT-SENSITIVE HEATDEVELOPABLE RECORDING ELEMENT, WHICH COMPRISES APPLYING TO A CARRIER A COATING INCLUDING A LIGHT-SENSITIVE DIAZO COMPOUND AND AN AZO COUPLING COMPOUND HAVING A PREDETERMINED VELOCITY OF REACTION WITH A SOLUTION OF AN AMMONIATE DEVELOPER-COMPOUND SELECTED FROM THE GROUP CONSISTING OF UREA AND THE LOWER ALKYL SUBSTITUTED UREAS AND SAID DEVELOPER-COMPOUND HAVING A SOLID STATE CRITICAL TEMPERATURE THERMAL DECOMPOSITION AMMONIATE REACTION WITH SAID COATING AT TEMPERATURE SUBSTANTIALLY ABOVE SOLUTION TEMPERATURES, APPLYING SAID SELECTED COMPOUND IN A SOLUTION STATE AT A TEMPERATURE SUBSTANTIALLY BELOW SAID SOLID STATE CRITICAL TEMPERATURE TO SAID COATING IN A SEPARATE STRATUM, AND SOLIDIFYING THE SOLUTE AND EVAPORATING THE SOLVENT FROM SAID SOLUTION STATE WITHIN A TIME LESS THAN REQUIRED BY SAID PREDETERMINED VELOCITY OF REACTION TO APPRECIABLY AMMONIATE SAID COATING IN THE ABSENCE OF A CHEMICAL REACTION-INHIBITOR FOR THE COUPLING REACTION OF SAID DIAZO COMPOUND AND AZO COUPLING COMPOUND.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-23 | 1959-07-25 | 1960-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-23 | 1963-07-25 | 1964-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-23 | 1967-07-25 | 1968-01-24 | $7700.00 | Window Closed / Lapsed |