Patent US2778735A successfully refreshed from Google Patents.
US2778735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photo-sensitive coated paper plate for photo-lithography
Assignee: Warren SD Co
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Filing: 1953-10-01
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Granted: 1957-01-22
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Expires: 1973-10-01
Abstract
No abstract record available.
Inventors
- 👤 Frederic E Brinnick
- 👤 Doggett Towers
- 👤 Raymond L Oransky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:18
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/016
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PHOTO-SENSITIVE COATED PAPER PRODUCT CAPABLE OF BEING TRANSFORMED BY ACTINIC LIGHT INTO A PLANOGRAPH PRINTING PLATE COMPRISING A PAPER BASE HAVING A CALENDERED COATING LAYER THEREON, SAID COATING CONSISTING ESSENTIALLY OF AN INSOLUBILIZED CARBOXYMETHYLHYDROXYETHL CELLULOSE ADHESIVE IN WHICH THE RATIO OF CARBOXYMETHYL GROUPS TO HYDROXYETHYL GROUPS IS WITHIN THE RANGE FROM 0.3 TO 1 AND IN WHICH THE DEGREE OF SUBSTITUTION OF ANHYROGLUCOSE UNITS IS GREATER THAN 0.8 AND A GREATER QUANTITY OF A NONHYDROUS PIGMENT OF THE GROUP CONSISTING OF BLANC FIXE AND TITANIUM DIOXIDE AND A PHOTO-SENSITIVE LAYER OVER SAID COATING, SAID LAYER COMPRISING A PHOTO-SENSITIZER TAKEN FROM THE GROUP CONSISTING OF (1) DIAZONIUM SALTS CORRESPONDING TO THE FORMULA
Claim 2
Dependent Claim
112 words
A PHOTO-SENSITIVE COATED PAPER PRODUCT CAPABLE OF BEING TRANSFORMED BY ACTINIC LIGHT INTO A PLANOGRAPH PRINTING PLATE COMPRISING A PAPER BASE HAVING A CALENDERED COATING LAYER THEREON, SAID COATING CONSISTING ESSENTIALLY OF AN INSOLUBILIZED CARBOXYMETHYLHYDROXYETHL CELLULOSE ADHESIVE IN WHICH THE RATIO OF CARBOXYMETHYL GROUPS TO HYDROXYETHYL GROUPS IS WITHIN THE RANGE FROM 0.3 TO 1 AND IN WHICH THE DEGREE OF SUBSTITUTION OF ANHYROGLUCOSE UNITS IS GREATER THAN 0.8 AND A GREATER QUANTITY OF A NONHYDROUS PIGMENT OF THE GROUP CONSISTING OF BLANC FIXE AND TITANIUM DIOXIDE AND A PHOTO-SENSITIVE LAYER OVER SAID COATING, SAID LAYER COMPRISING A PHOTO-SENSITIZER TAKEN FROM THE GROUP CONSISTING OF (1) DIAZONIUM SALTS CORRESPONDING TO THE FORMULA
References Cited (Backward Citations)
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US2474700A
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US2570262A
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US2649373A
Cited
GB678599A
Cited
US2626866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-22 | 1960-07-23 | 1961-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-22 | 1964-07-23 | 1965-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-22 | 1968-07-23 | 1969-01-22 | $7700.00 | Window Closed / Lapsed |