US2835576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light-sensitive polyvalent metal alginate photolithographic element
Assignee: Individual
•
Filing: 1951-12-06
•
Granted: 1958-05-20
•
Expires: 1971-12-06
Abstract
No abstract record available.
Inventors
- 👤 Anthony L Ensink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:52
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/036; G; G03; G03F; G03F7/00; G03F7/004; G03F7/04; G03F7/06; B41C; B41C1/00; B41C1/10; B41C1/1091; B41C2210/00; B41C2210/16; Y; Y10; Y10S; Y10S430/00; Y10S430/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PLANOGRAPHIC PRINTING PLATE COMPRISING A BASE SHEET AND A CONTINUOUS COATING ON THE SURFACE OF THE BASE SHEET HAVING A WATER RECEPTIVE, INK REPELLENT, HYDROPHILLIC SURFACE AND CONSISTING OF AN INSOLUBLE POLYVALENT METAL ALIGNATE AS THE ADHESIVE COLLOID, A FINELY DIVIDED INERT FILLER PRESENT IN AN AMOUNT RANGING FROM 5-8 PARTS BY WEIGHT OF FILLER TO 1 PART BY WEIGHT OD ALIGNATE AND A LIGHT SENSIZING METAL SALT WHICH REACTS FURTHER TO HARDEN THE ALGINATE UPON EXPOSURE TO LIGHT TO MAKE THE ALIGNATE INK RECEPTIVE ANS WATER REPELLENT IN THE EXPOSED AREAS, SAID LIGHT SENSIZING METAL BEING INCORPORATED IN THE ALIGNATE COATING.
Claim 2
Dependent Claim
103 words
A PLANOGRAPHIC PRINTING PLATE COMPRISING A BASE SHEET AND A CONTINUOUS COATING ON THE SURFACE OF THE BASE SHEET HAVING A WATER RECEPTIVE, INK REPELLENT, HYDROPHILLIC SURFACE AND CONSISTING OF AN INSOLUBLE POLYVALENT METAL ALIGNATE AS THE ADHESIVE COLLOID, A FINELY DIVIDED INERT FILLER PRESENT IN AN AMOUNT RANGING FROM 5-8 PARTS BY WEIGHT OF FILLER TO 1 PART BY WEIGHT OD ALIGNATE AND A LIGHT SENSIZING METAL SALT WHICH REACTS FURTHER TO HARDEN THE ALGINATE UPON EXPOSURE TO LIGHT TO MAKE THE ALIGNATE INK RECEPTIVE ANS WATER REPELLENT IN THE EXPOSED AREAS, SAID LIGHT SENSIZING METAL BEING INCORPORATED IN THE ALIGNATE COATING.
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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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |