US3366481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photoengraving resists and compositions therefor
Assignee: Harmick Research and Development Corp
•
Filing: 1963-09-20
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Granted: 1968-01-30
•
Expires: 1983-09-20
Abstract
No abstract record available.
Inventors
- 👤 Murray J Lalone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:05
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/04; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/11; Y10S430/111
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
67 words
AN AQUEOUS COMPOSITION COMPRISING A POLYMERIC SOLUTION CONTAINING FROM ABOUT 8% TO ABOUT 20% BY WEIGHT OF A POLYMERIC MIXTURE OF WATER SOLUBLE POLYVINYL ALCOHOL HAVING AN ASH CONTENT OF LESS THAN 0.6% BY WEIGHT TOGETHER WITH FROM 5% TO ABOUT 10% BY WEIGHT BASED ON THE TOTAL WEIGHT OF POLYMER OF WATER SOLUBLE POLYACRYLIC ACID HAVING A MOLECULAR WEIGHT OF FROM ABOUT 25,000 TO ABOUT 150,000.
Claim 2
Dependent Claim
67 words
AN AQUEOUS COMPOSITION COMPRISING A POLYMERIC SOLUTION CONTAINING FROM ABOUT 8% TO ABOUT 20% BY WEIGHT OF A POLYMERIC MIXTURE OF WATER SOLUBLE POLYVINYL ALCOHOL HAVING AN ASH CONTENT OF LESS THAN 0.6% BY WEIGHT TOGETHER WITH FROM 5% TO ABOUT 10% BY WEIGHT BASED ON THE TOTAL WEIGHT OF POLYMER OF WATER SOLUBLE POLYACRYLIC ACID HAVING A MOLECULAR WEIGHT OF FROM ABOUT 25,000 TO ABOUT 150,000.
Claim 3
Dependent Claim
73 words
AN AQUEOUS COMPOSITION COMPRISING A POLYMERIC SOLUTION CONTAINING FROM ABOUT 8% TO ABOUT 20% BY WEIGHT OF A POLYMERIC MIXTURE OF WATER SOLUBLE POLYVINYL ALCOHOL HAVING AN ASH CONTENT OF LESS THAN 0.6% BY WEIGHT TOGETHER WITH FROM ABOUT 5% TO ABOUT 10% BY WEIGHT BASED ON THE TOTAL WEIGHT OF POLYMER OF WATER SOLUBLE POLYACRYLIC ACID HAVING A MOLECULAR WEIGHT OF FROM ABOUT 25,000 TO ABOUT 150,000 AND A LIGHT SENSITIZING AGENT.
Claim 4
Dependent Claim
73 words
AN AQUEOUS COMPOSITION COMPRISING A POLYMERIC SOLUTION CONTAINING FROM ABOUT 8% TO ABOUT 20% BY WEIGHT OF A POLYMERIC MIXTURE OF WATER SOLUBLE POLYVINYL ALCOHOL HAVING AN ASH CONTENT OF LESS THAN 0.6% BY WEIGHT TOGETHER WITH FROM ABOUT 5% TO ABOUT 10% BY WEIGHT BASED ON THE TOTAL WEIGHT OF POLYMER OF WATER SOLUBLE POLYACRYLIC ACID HAVING A MOLECULAR WEIGHT OF FROM ABOUT 25,000 TO ABOUT 150,000 AND A LIGHT SENSITIZING AGENT.
Claim 5
Dependent Claim
80 words
A PHOTOENGRAVING PLATE COMPRISING A ZINC BASE WITH A SURFACE COATING OF A PHOTOSENSITIVE LAYER FROM ABOUT 0.0002 TO ABOUT 0.0004 INCH THICK COMPRISING A LIGHT SENSITIZING AGENT DISPERSED IN A POLYMER MIXTURE COMPRISING WATER SOLUBLE POLYVINYL ALCOHOL HAVING AN ASH CONTENT OF LESS THAN 0.6% BY WEIGHT AND FROM ABOUT 5% TO ABOUT 10% BY WEIGHT BASED ON THE TOTAL WEIGHT OF POLYMER OF WATER SOLUBLE POLYACRYLIC ACID HAVING A MOLECULAR WEIGHT OF FROM ABOUT 25,000 TO ABOUT 150,000.
Claim 6
Dependent Claim
80 words
A PHOTOENGRAVING PLATE COMPRISING A ZINC BASE WITH A SURFACE COATING OF A PHOTOSENSITIVE LAYER FROM ABOUT 0.0002 TO ABOUT 0.0004 INCH THICK COMPRISING A LIGHT SENSITIZING AGENT DISPERSED IN A POLYMER MIXTURE COMPRISING WATER SOLUBLE POLYVINYL ALCOHOL HAVING AN ASH CONTENT OF LESS THAN 0.6% BY WEIGHT AND FROM ABOUT 5% TO ABOUT 10% BY WEIGHT BASED ON THE TOTAL WEIGHT OF POLYMER OF WATER SOLUBLE POLYACRYLIC ACID HAVING A MOLECULAR WEIGHT OF FROM ABOUT 25,000 TO ABOUT 150,000.
References Cited (Backward Citations)
US2169250A
Cited
US2184310A
Cited
US2937085A
Cited
US3043693A
Cited
US3004851A
Cited
US3118765A
Cited
US3133865A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |