US3069268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving the tonal gradation of diazotype materials using stratified sensitizing components and u. v. filters
Assignee: GAF Chemicals Corp
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Filing: 1958-07-10
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Granted: 1962-12-18
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Expires: 1978-07-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Clifford E Herrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:53
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/52; G03C1/60; G03C1/61
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
LIGHT-SENSITIVE DIAZOTYPE PRINTING MATERIAL CAPABLE OF REPRODUCING CONTINUOUS TONE IMAGES, COMPRISING A BASE, STRATIFIED LIGHT-SENSITIVE LAYERS THEREON EACH CONTAINING A LIGHT-SENSITIVE DIAZO COMPOUND AND A COUPLING COMPONENT, SAID SENSITIVE LAYERES BEING POSITIONED SO AS TO BE ACTED ON IN SEQUENCE BY THE PRINTING LIGHT AND A U.V. ABSORBER LAYER LOCATED IN SAID PRINTING MATERIAL AT SUCH POINT THAT IT ACTS ON THE PRINTING LIGHT AFTER THE LIGHT HAS PASSES THROUGH ONE SENSITIVE LAYER AND NOT LATER THAN ITS PASSAGE THROUGH THE OTHER SENSITIVE LAYER, THE U.V. ABSORBER IN SAID LAYER HAVING A STRONGABSORPTION IN THE
Claim 2
Dependent Claim
95 words
LIGHT-SENSITIVE DIAZOTYPE PRINTING MATERIAL CAPABLE OF REPRODUCING CONTINUOUS TONE IMAGES, COMPRISING A BASE, STRATIFIED LIGHT-SENSITIVE LAYERS THEREON EACH CONTAINING A LIGHT-SENSITIVE DIAZO COMPOUND AND A COUPLING COMPONENT, SAID SENSITIVE LAYERES BEING POSITIONED SO AS TO BE ACTED ON IN SEQUENCE BY THE PRINTING LIGHT AND A U.V. ABSORBER LAYER LOCATED IN SAID PRINTING MATERIAL AT SUCH POINT THAT IT ACTS ON THE PRINTING LIGHT AFTER THE LIGHT HAS PASSES THROUGH ONE SENSITIVE LAYER AND NOT LATER THAN ITS PASSAGE THROUGH THE OTHER SENSITIVE LAYER, THE U.V. ABSORBER IN SAID LAYER HAVING A STRONGABSORPTION IN THE
Claim 3
Dependent Claim
43 words
A. REGION OF THE MERCURY ARC AND A MODEST ABSORPTION IN THE REGION AROUND 4046 A. AND SELECTED FROM THE CLASS CONSISTING OF 1,3-DI-2-THIENYL-2-PROPEN-1-ONE, 2 NAPHTHALENEDIAZOCARBOXAMIDE, 4,4''-OXALYDIRESORCIINOL, BUTYL - 3 - UMBELLIFERONECARBOXYLATE, 2,3-BIS - (3,4METHYLENODIOXPHENYL) - 5 - PENYLPYRROLE, 2,2'' -DIHYDROXY4,4''-DIMETHOXY-BENZOPHENONE AND 2,2''4''-TRIHYDROXY-4METHOXY-BENZOPHENONE.
Claim 4
Dependent Claim
43 words
A. REGION OF THE MERCURY ARC AND A MODEST ABSORPTION IN THE REGION AROUND 4046 A. AND SELECTED FROM THE CLASS CONSISTING OF 1,3-DI-2-THIENYL-2-PROPEN-1-ONE, 2 NAPHTHALENEDIAZOCARBOXAMIDE, 4,4''-OXALYDIRESORCIINOL, BUTYL - 3 - UMBELLIFERONECARBOXYLATE, 2,3-BIS - (3,4METHYLENODIOXPHENYL) - 5 - PENYLPYRROLE, 2,2'' -DIHYDROXY4,4''-DIMETHOXY-BENZOPHENONE AND 2,2''4''-TRIHYDROXY-4METHOXY-BENZOPHENONE.
References Cited (Backward Citations)
US2501874A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |